Update README.md

spine-unity/README.md

@@ -9,6 +9,10 @@ The Spine runtime for Unity comes with an example project which has "spineboy" w
 1. Copy `spine-csharp/src` to `spine-unity/Assets/Spine/spine-csharp`.
 1. Open the `Assets/examples/spineboy/spineboy.unity` scene.
 
+# Setup Tutorial Video
+
+[![Setup tutorial video](http://i.imgur.com/2AyZq01.png)](http://www.youtube.com/watch?v=x1umSQulghA)
+
 # Notes
 
 - Atlas images should use premultiplied alpha.