Merge pull request #3 from punkrockpolly/master

fix for python3 support
use generator for iterating over bills
saves bill details to `bills.csv`
add `main.py` with basic loop
Merge branch 'master' of https://github.com/ncollins/nytimeshackday2013
parameterized function to search for phrases
count references to the United States Code
Merge branch 'master' of https://github.com/ncollins/nytimeshackday2013