Pacman 0.8.1

Hey, can you please check my fork?

AI should be exactly according to the original Pacman, I fixed many bugs and made it a little more OOP. The movement of Pacman is changed as well - if you have a real Firefox OS device, please check how it works (I was using only the emulator).

There is probably more work to do on graphics and design stuff, but that shouldn't take much time anymore.

If you can, add me to contributors and give me the 'push' permission so that I don't have to do these forks again.

Thanks