Add GetRigidBody function mouse position in PhysicsWorld2D.
Remove animation only attribute support.
Handle corner case: soft-cursor is invisible + OS-cursor is visible.
Fix GCC Makefile build on Mac OS X platform for good.
Travis CI: API documentation update at 2014-04-12 16:17:26 UTC.
[ci package]
For Travis CI - switch CI build to use OS X build environment.