Clarified licensing on runtimes pages.

spine-as3/README.md

@@ -2,6 +2,12 @@
 
 The spine-as3 runtime provides functionality to load and manipulate [Spine](http://esotericsoftware.com) skeletal animation data using Adobe's ActionScript 3.0 (AS3). The [`spine.flash` package](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-as3/spine-as3/src/spine/flash) can be used to render Spine animations using Flash. spine-as3 can be extended to enable Spine animations for other AS3 projects, such as [Starling](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-starling).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-c/README.md

@@ -2,6 +2,12 @@
 
 The spine-c runtime provides basic functionality to load and manipulate [Spine](http://esotericsoftware.com) skeletal animation data using ANSI C. It does not perform rendering but can be extended to enable Spine animations for other C-based projects, including C++ or Objective-C projects.
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-cocos2d-iphone/2/README.md

@@ -2,6 +2,12 @@
 
 The spine-cocos2d-iphone runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [cocos2d-iphone](http://www.cocos2d-iphone.org/). spine-cocos2d-iphone is based on [spine-c](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-c).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-cocos2d-iphone/3/README.md

@@ -2,6 +2,12 @@
 
 The spine-cocos2d-iphone runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [cocos2d-iphone](http://www.cocos2d-iphone.org/). spine-cocos2d-iphone is based on [spine-c](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-c).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-cocos2dx/2/README.md

@@ -2,6 +2,12 @@
 
 The spine-cocos2dx runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [cocos2d-x](http://www.cocos2d-x.org/). spine-cocos2dx is based on [spine-c](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-c).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-cocos2dx/3/README.md

@@ -2,6 +2,12 @@
 
 The spine-cocos2dx runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [cocos2d-x](http://www.cocos2d-x.org/). spine-cocos2dx is based on [spine-c](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-c).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-corona/README.md

@@ -2,6 +2,12 @@
 
 The spine-corona runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [Corona](http://coronalabs.com/products/corona-sdk/). spine-corona is based on [spine-lua](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-lua).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-csharp/README.md

@@ -2,6 +2,12 @@
 
 The spine-csharp runtime provides functionality to load and manipulate [Spine](http://esotericsoftware.com) skeletal animation data using C# (C Sharp). It does not perform rendering but can be extended to enable Spine animations for other C#-based projects.
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-js/README.md

@@ -6,6 +6,12 @@ The spine-js runtime provides functionality to load and manipulate [Spine](http:
 
 The spine-canvas runtime extends spine-js to perform rendering using an HTML5 canvas. Because it renders rectangular images, nonuniform scaling and mesh attachments are not supported.
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-libgdx/README.md

@@ -2,6 +2,12 @@
 
 The spine-libgdx runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [libgdx](http://www.libgdx.com/).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-love/README.md

@@ -2,6 +2,12 @@
 
 The spine-love runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [LÖVE](https://love2d.org/). spine-love is based on [spine-lua](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-lua).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-lua/README.md

@@ -1,38 +1,13 @@
-/******************************************************************************
- * Spine Runtimes Software License
- * Version 2.3
- * 
- * Copyright (c) 2013-2015, Esoteric Software
- * All rights reserved.
- * 
- * You are granted a perpetual, non-exclusive, non-sublicensable and
- * non-transferable license to use, install, execute and perform the Spine
- * Runtimes Software (the "Software") and derivative works solely for personal
- * or internal use. Without the written permission of Esoteric Software (see
- * Section 2 of the Spine Software License Agreement), you may not (a) modify,
- * translate, adapt or otherwise create derivative works, improvements of the
- * Software or develop new applications using the Software or (b) remove,
- * delete, alter or obscure any trademarks or any copyright, trademark, patent
- * or other intellectual property or proprietary rights notices on or in the
- * Software, including any copy thereof. Redistributions in binary or source
- * form must include this license and terms.
- * 
- * THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *****************************************************************************/
-
 # spine-lua
 
 The spine-lua runtime provides functionality to load and manipulate [Spine](http://esotericsoftware.com) skeletal animation data using [Lua](http://www.lua.org/). It does not perform rendering but can be extended to enable Spine animations for other Lua-based projects.
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-monogame/README.md

@@ -2,6 +2,12 @@
 
 The spine-monogame runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [MonoGame](http://monogame.codeplex.com/). spine-monogame is based on [spine-xna](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-xna) and adds MonoGame project files.
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-sfml/README.md

@@ -2,6 +2,12 @@
 
 The spine-sfml runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [SFML](http://www.sfml-dev.org/). spine-sfml is based on [spine-c](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-c).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-starling/README.md

@@ -2,6 +2,12 @@
 
 The spine-starling runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [Starling](http://gamua.com/starling/). spine-starling is based on [spine-as3](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-as3).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).

spine-turbulenz/README.md

@@ -2,6 +2,12 @@
 
 The spine-turbulenz runtime provides basic functionality to load and manipulate [Spine](http://esotericsoftware.com) skeletal animation data using [Turbulenz](http://biz.turbulenz.com/developers). spine-turbulenz is based on [spine-js](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-js).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 To run the example:

spine-unity/README.md

@@ -2,12 +2,20 @@
 
 The spine-unity runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [Unity](http://unity3d.com/). spine-unity is based on [spine-csharp](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-csharp).
 
-While spine-unity can render directly with Unity, without the need for any other plugins, it also works with [2D Toolkit](http://www.unikronsoftware.com/2dtoolkit/) and render skeletons from a TK2D texture atlas.
+While spine-unity can render directly with Unity, without the need for any other plugins, it also works with [2D Toolkit](http://www.unikronsoftware.com/2dtoolkit/) and can render skeletons from a TK2D texture atlas.
 
-A Spine skeleton is a GameObject and can be used throughout Unity like any other GameObject. It depends only on Unity's `MeshRenderer`, so it is close to the metal. `SkeletonUtility` allows other GameObjects to interact with the Spine skeleton, to control bones in the skeleton, be controlled by the skeleton, attach colliders, etc.
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
 
 ## Documentation
 
+A Spine skeleton is a GameObject and can be used throughout Unity like any other GameObject. It depends only on Unity's `MeshRenderer`, so it is close to the metal. `SkeletonUtility` allows other GameObjects to interact with the Spine skeleton, to control bones in the skeleton, be controlled by the skeleton, attach colliders, etc.
+
+Spine skeletons can be "baked" into native Unity animations for use with Mecanim. Baking is an advanced feature with a number of limitations, so in most cases baking should not be used.
+
 The [Spine Unity Features Tutorial](http://esotericsoftware.com/forum/Unity-Feature-Tutorials-4839) forum thread has many videos on how to use spine-unity.
 
 ## Quick installation

spine-xna/README.md

@@ -2,6 +2,12 @@
 
 The spine-xna runtime provides functionality to load, manipulate and render [Spine](http://esotericsoftware.com) skeletal animation data using [XNA](http://msdn.microsoft.com/xna/). spine-xna is based on [spine-csharp](https://github.com/EsotericSoftware/spine-runtimes/tree/master/spine-csharp).
 
+## Licensing
+
+This Spine Runtime may only be used for personal or internal use, typically to evaluate Spine before purchasing. If you would like to incorporate a Spine Runtime into your applications, distribute software containing a Spine Runtime, or modify a Spine Runtime, then you will need a valid [Spine license](https://esotericsoftware.com/spine-purchase). Please see the [Spine Runtimes Software License](https://github.com/EsotericSoftware/spine-runtimes/blob/master/LICENSE) for detailed information.
+
+The Spine Runtimes are developed with the intent to be used with data exported from Spine. By purchasing Spine, `Section 2` of the [Spine Software License](https://esotericsoftware.com/files/license.txt) grants the right to create and distribute derivative works of the Spine Runtimes.
+
 ## Setup
 
 1. Download the Spine Runtimes source using [git](https://help.github.com/articles/set-up-git) or by downloading it [as a zip](https://github.com/EsotericSoftware/spine-runtimes/archive/master.zip).