Adding phaser rendering
Phaser rendering tested and working
Added entity duplication

This allows an entity to be created with the same properties of the
original entity, but without the reference to it. This allows the cloned
copy to be changed without affecting the original copy.
Velocity system tested and works
Collision system tested and works

collision system dispatches events when bounding boxes intersect
More collision system tests

Tested with velocity in action. Collision system still works.