Added EC_Avatar unit test to repo.
Bone.attach now supports placeables instead of meshes.
Added skeletonRef and assetLoaded check to EC_Avatar unit test.
Merge branch 'dev' into avatar

Conflicts:
	src/scene/Bone.js
	src/scene/EC_Mesh.js
	src/view/ThreeView.js
Fixed AC_Avatar unit test to work with Tundra namespace.
Fixed Avatar example to work with Tundra namespace.
Merge branch 'dev' into avatar
Added EC_AnimationController unit test to repo. Work in progress.
Updated animation controller unit test.
Separated EC_AnimationController and EC_Avatar unit tests.
Merge branch 'dev' into avatar

Conflicts:
	examples/Avatar/index.html