Cleaned up documentation
Moved raycasting to its oown file while it's in a very early development stage
Added multisampling option to collision detection.
Fixed a bug where destroying an object in onCollide could cause a crash for fast moving objects
Removed .DS_Store file
Fixed a bug where duplicate 2 balls would occasionally appear
Fixed various bugs with collision events
Removed unnecessary debug logging
Merge branch 'master' into ds-store

Conflicts:
	Samples/Physics Demo/.DS_Store