Add simple animation example from pygame tutorial
Add simple animation example from pygame tutorial

GertBurger/pygame_cffi,GertBurger/pygame_cffi,CTPUG/pygame_cffi,caseyc37/pygame_cffi,caseyc37/pygame_cffi,CTPUG/pygame_cffi,GertBurger/pygame_cffi,caseyc37/pygame_cffi,GertBurger/pygame_cffi,CTPUG/pygame_cffi