Added the new Layer Game Object

Author: photonstorm

src/gameobjects/index.js

@@ -32,6 +32,7 @@ var GameObjects = {
     Graphics: require('./graphics/Graphics.js'),
     Group: require('./group/Group'),
     Image: require('./image/Image'),
+    Layer: require('./layer/Layer'),
     Particles: require('./particles'),
     PathFollower: require('./pathfollower/PathFollower'),
     RenderTexture: require('./rendertexture/RenderTexture'),
@@ -74,6 +75,7 @@ var GameObjects = {
         Graphics: require('./graphics/GraphicsFactory'),
         Group: require('./group/GroupFactory'),
         Image: require('./image/ImageFactory'),
+        Layer: require('./layer/LayerFactory'),
         Particles: require('./particles/ParticleManagerFactory'),
         PathFollower: require('./pathfollower/PathFollowerFactory'),
         RenderTexture: require('./rendertexture/RenderTextureFactory'),
@@ -106,6 +108,7 @@ var GameObjects = {
         Graphics: require('./graphics/GraphicsCreator'),
         Group: require('./group/GroupCreator'),
         Image: require('./image/ImageCreator'),
+        Layer: require('./layer/LayerCreator'),
         Particles: require('./particles/ParticleManagerCreator'),
         RenderTexture: require('./rendertexture/RenderTextureCreator'),
         Rope: require('./rope/RopeCreator'),