Delete python-twitter
Removing a space that is going to bug me.
Updating user model and adding Tweet model.
Removing logging line I accidentally left in.
Adding cron job to get tweets for users.

Cron job will start by running every hour.  Gets the last x tweets,
where x is either 20 or every tweet since the last time we got a tweet
from the user, whichever is smaller.  Stores those tweets in the
datastore.