add setup article

threejs/lessons/threejs-setup.md

@@ -0,0 +1,56 @@
+Title: Three.js Setup
+Description: How to setup your development environment for three.js
+
+This article is one in a series of articles about three.js.
+The first article was [about three.js fundamentals](threejs-fundamentals.html).
+If you haven't read that yet you might want to start there.
+
+Before we go any further we need to talk about setting up your
+computer to do developement. In particular, for security reasons,
+WebGL can not use images from your hard drive directly. That means
+in order to do development you need to use a web server. Fortunately
+development webservers are super easy to setup and use.
+
+First off if you'd like you can download this entire site from [this link](https://github.com/greggman/threejsfundamentals/archive/gh-pages.zip).
+Once downloaded double click the zip file to unpack the files.
+
+Next download one of these simple web servers
+
+If you'd prefer a web server with a user interface there's 
+[Servez](https://greggman.github.io/servez)
+
+{{{image url="resources/servez.gif" }}}
+
+Just point it at the folder where you unzipped the files, click "Start", then go to
+in your browser [`http://localhost:8080/`](http://localhost:8080/) or if you'd
+like to browse the samples go to [`http://localhost:8080/threejs`](http://localhost:8080/threejs).
+
+To stop serving pick stop or quit Servez.
+
+If you prefer the command line (I do), another way is to use [node.js](https://nodejs.org).
+Download it, install it, then open a command prompt / console / terminal window. If you're on Windows the installer will add a special "Node Command Prompt" so use that.
+
+Then install the [`http-server`](https://github.com/indexzero/http-server) by typing
+
+    npm -g install http-server
+
+If you're on OSX use
+
+    sudo npm -g install http-server
+
+Once you've done that type
+
+    http-server path/to/folder/where/you/unzipped/files
+
+It should print something like
+
+{{{image url="resources/http-server-response.png" }}}
+
+Then in your browser go to [`http://localhost:8080/`](http://localhost:8080/).
+
+If you don't specify a path then http-server will serve the current folder.
+
+If either of those options are not to your liking 
+[there are many other simple servers to choose from](https://stackoverflow.com/questions/12905426/what-is-a-faster-alternative-to-pythons-http-server-or-simplehttpserver).
+
+Note that you have a server setup we can move on to [textures](threejs-textures.html).

threejs/lessons/threejs-textures.md

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+Title: Three.js Textures
+Description: Using Textures in three.js
+
+TBD

threejs/lessons/toc.html

@@ -6,6 +6,7 @@
     <li><a href="/threejs/lessons/threejs-primitives.html">Three.js Primitives</a></li>
     <li><a href="/threejs/lessons/threejs-scenegraph.html">Three.js Scenegraph</a></li>
     <li><a href="/threejs/lessons/threejs-materials.html">Three.js Materials</a></li>
+    <li><a href="/threejs/lessons/threejs-materials.html">Three.js Setup</a></li>
     <li><a href="/threejs/lessons/threejs-fog.html">Three.js Fog</a></li>
   </ul>
 </ul>