Added:
*AnimationState.java
*AnimationStateTest.java

Updated:
*Git ignore to ignore all LibGDX libs.
*MixTest.Java -- Reverted back to LWJGL
*SkeletonTest.java -- Reverted back to LWJGL

A few Idea project files where added. I left these in for easy future development with
Intellij Idea.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	spine-libgdx/.classpath
	spine-libgdx/test/com/esotericsoftware/spine/MixTest.java
	spine-libgdx/test/com/esotericsoftware/spine/SkeletonTest.java

*First Merge attempt.. may Gawd help us all.  -Disk1of5.
**Updated AnimationStatesTest.Java to match the LwjglApplication launcher of the other examples.
-Disk1of5
Merge pull request #14 from Disk1of5/master

New test and added animation state.