Remove game.input dependency from chipmunk.demo so it works on linux
Remove game.input dependency from chipmunk.demo so it works on linux

factor/factor,bjourne/factor,sarvex/factor-lang,dch/factor,sarvex/factor-lang,AlexIljin/factor,nicolas-p/factor,mrjbq7/factor,tgunr/factor,slavapestov/factor,AlexIljin/factor,mrjbq7/factor,mrjbq7/factor,nicolas-p/factor,slavapestov/factor,slavapestov/factor,bjourne/factor,sarvex/factor-lang,mrjbq7/factor,slavapestov/factor,bjourne/factor,mrjbq7/factor,nicolas-p/factor,dch/factor,bjourne/factor,factor/factor,slavapestov/factor,dch/factor,factor/factor,bpollack/factor,AlexIljin/factor,tgunr/factor,AlexIljin/factor,tgunr/factor,bjourne/factor,factor/factor,sarvex/factor-lang,bjourne/factor,sarvex/factor-lang,bpollack/factor,nicolas-p/factor,mrjbq7/factor,slavapestov/factor,bpollack/factor,tgunr/factor,nicolas-p/factor,tgunr/factor,sarvex/factor-lang,dch/factor,bpollack/factor,nicolas-p/factor,tgunr/factor,factor/factor,factor/factor,dch/factor,AlexIljin/factor,bpollack/factor,slavapestov/factor,sarvex/factor-lang,bjourne/factor,nicolas-p/factor,bpollack/factor,AlexIljin/factor,dch/factor,AlexIljin/factor,bpollack/factor