Seven Toes addition

Hi Paul, this is the Seven Toes code.  Only pretty minor changes to the common framework; these should be easy to review.  Touch Punch shows up in the history, but I eventually got rid of it.  I haven't tried collapsing the history, since it seems like a good enough case study for someone else working with the code.

FYI, I haven't looked at the credits/license at all, but would be happy if you mention something like "Seven Toes game designed by Don Hirst and implemented by Eric Hirst" somewhere in the mix.  I don't care about any other license details and don't mind if you include this in a free or paid app.

Let me know if this is OK (it's the first time I've ever tried a pull request in GitHub) and thanks for the nice framework!

-Eric
eric.v.hirst@gmail.com
206-930-8358