Reconfigured so everything is on the same page, had some mismatched code
commits.
Added back and modified Quadtree from gamedevelopment.tutsplus.com to
check against the projectile only, then it runs collision detection on
the rectangle(s) found near the projectile.
Seems the Quadtree didn't get added the first time...
Merge branch 'phys-update' of https://github.com/Bingram/Gorillas.git
into phys-update

Conflicts:
	src/model/Board.java
	src/objects/Building.java
	src/objects/Object.java
	src/objects/Player.java