Added state machine to DodgeballEngine.
Finished creating player models and added preliminary Avatar class.

close #6
Merge branch 'development' of github.com:masoug/dodgeball into development
Added player and ball-player collision to them. This is still very buggy and weird; i.e. the scaling of the Irrlicht scene node and the Bullet collision shapes are very odd. There are also only three visible players on the opposite side.

close #10
Added ball-player collision detection. Improved the collision detection system by generalizing the collision cases to functions. Also added template function for scanning through the dodgeball and player vectors.

close #39
Merge branch 'development'