Updating CMakeModules files.

Added in ability to use osgBullet from CMake
Updating CMakeLists.txt to attempt to find OSGBullet and its deps
Small update to get us up and running on OS X again.
Merge branch 'master' of https://github.com/VRAC-WATCH/vr_builder

Conflicts:
	src/AppManager.cpp
	src/Scene.cpp