Added an option to make rigidbody kinematic
Physics contact listener for Box2D
Set and get angular velocity
Get and set restitution of rigidbodies
Updated solution and platform.mk
Merge branch 'physics-stuff' of https://github.com/batmanbatmanbatman/UtH-Engine into batmanbatmanbatman-physics-stuff

Conflicts:
	vs2013/Engine/Engine.vcxproj.filters
Merge branch 'batmanbatmanbatman-physics-stuff' into develop
Some possible fixes to controller input
Moved physics to its own folder
Added a wrapper around box2d world for easier usage
Clean  test scene
Fix android build and a few warnings in gameobject
Potentially fixed parent child transforms
Actually fixed the parent child transform now
Fix libsndfile on android
Marginally optimized vertex buffers by using glBufferSubData
Made window defaults more sensible
Merge remote-tracking branch 'origin/develop' into feature/overhaul

Conflicts:
	vs2013/Engine/Engine.vcxproj.filters