registers changes on levels... its a good start... on thursday it should
be over!
adds item and counter for lives
agrega level counter y complejidad incremental
adds game over
supports iOS 6, adds boss, removes FPS counter, everything looks super
arregla workspace
Merge branch 'master' of github.com:kshmir/ios-videogames-2013-1

Conflicts:
	killbills/KBGUI.h
	killbills/KBGUI.m
	killbills/LevelLayer.m