Adding problem set 1 to pip2

Added pset1 and addititional toc, believe all my merge conflicts are cleared up and this should be fine.

Pset2 is basically complete, but multiple choice code isn't working at the moment?, debugging.

I'm confused about some of the stuff going on here and need to look into it more closely. At worst, here's the problem set. Switching to the new branch caused more conflicts with my setup than I expected and I need to make sure everything is cleared up. I think that it is... I'll look again tomorrow.