Now the tank takes in a reference to the physics space to add it's shape to it in the init
Replaced the tank graphics, they were pretty bad Marco..
Just commiting so I can merge.. nothing big.
Adding the psd files for the tank
Removed the xcuserstate file
Merge branch 'master' of https://github.com/sveinnfannar/Tanks

Conflicts:
	Tanks/Tank.h
	Tanks/Tank.m
Fixed a few bugs and did refactoring for clarity