Pull Request now includes Tetris!

completed: warmups
tower of Hanoi (with saving via YAML)
Mastermind(no saving, but yes AI)

Single block Tetris, with high scores saved, plus a difficulty setting as well. (Boring under about level 8).
I read through all of the Tetris code, but as far as code reviewing it I'm holding off at the moment as it's still a work in progress.  Generally it looks awesome and plays awesomely. Excellent job. I'm looking forward to checking out your final code once you're complete