Merge pull request #18 from kyleneideck/master

Fix broken tests for creating polls and results.
Update README.md

Added information about django-registrations, and how to create and confirm a new account, so that you can create polls.
Update README.md
Collect ballot data for correlations and auditing

Store each ballot rather than just the combined votes of all ballots and
the number of ballots cast. Resolves #3.