Port CC65 examples to pyNES

[gutomaia]

Try to port some CC65 examples to pyNES.

http://shiru.untergrund.net/files/src/cc65_nes_examples.zip
https://www.youtube.com/watch?t=5&v=jvgz5sY5xUw

-- Disclamer --
Right now, it's not possible. Some examples deals with some of the pyNES limitations. I think, with 0.2.0 that would be possible

Sugestion by @klaussilveira

[Nrezinorn]

I can take this one.