changed AWPCollisionEvent to AWPEvent
added raycast event;
support add AWPCollisionObject to physics world;
changed AWPCollisionEvent to AWPEvent;
fixed debugDraw disappearing bug
fixed set mass bug
added clean physics world function
fix warnings, removed not used functions
fixed set localScaling bug
Update README.txt
fixed repeat add body to physics world.
fixed release pointer in memory.  e.g. if you want dispose a rigid body, write this: physicsWorld.removeRigidBody(body, true); if clean up the physics world use this  physicsWorld.cleanWorld(true);
Away version check for Master
Merge pull request #15 from JohnBrookes/VersionCheckMaster

Away version check for Master
delete old files
merge with dev branch
fixed AWPBvhTriangleMeshShape support for CompactSubgeometry and SubGeometry.