Azalee Bostroem's Python work from 2012-10-gmu

I pulled this into my `master` when I was pushing for a centralized
boot camp branch in November.

@abostroem, thoughts on integrating these into the new `master`?

From Azalee:
I like this as a simple example of numpy and plotting capabilities. I've never actually taught it (we ran out of time) but I hope to someday be teaching a more pointed class to astronomers where I think this would be really helpful (hopefully some other disciplines will find it useful too).