Final porting -- with working path detection!

[dtgay]

Hey there everyone. I ported over all the ActionScript code to Python, improving logic and tweaking for our purposes along the way. Pressing [ENTER] generates a new grid, reporting if a path was found or not.

I have not:

• Made the game regenerate grids until a grid with a path has been found
• Implemented minimum moves (I did port the constant over to constants.py)

Implementing those two things is as easy as a couple lines.

[ralphbean]

This is awesome.

[dtgay]

Thanks :3