Added a grid snapper for easy positioning of sprites.
Merge branch 'master' of https://github.com/zac112/bugfree-bear into City_Testing
Made a StartUp scene which loads the player, managers and everything else that needs to be loaded before the game actually starts.
Added a forest scene and the ability to move to it.
Player can now go behind objects in the game.

The z value of each object is -(MAX_DEPTH (in Nav)-object's y position). This can be easily set with the ZCoordinateSetter MenuItem