A little bit of code cleanup

A couple of commits to start with.

GitHub pull requests (PR) can be thought of as collections of commits. If I keep pushing commits to this branch (which happens to be master), the PR will continue to accumulate them until you merge my branch into yours.

Basically I did the following:

1. Renamed some variables that were unpythonic. Things like ```OpenRate``` should become ```open_rate``` unless they are the name of a class.
2. Created a few empty classes. Haven't totally figured out what I'm gonna do, but I'm just sketching things out.

Merge this, read every file. Make any changes you want, just commit and push to your own repo often.