Fire Tracker needs TweetMachine testing and deployment 

Adds [Tweepy python library](http://tweepy.github.com/) to close #19. Tweepy docs are [here](http://packages.python.org/tweepy/html/api.html). Description of the object model is [here](http://klenwell.com/is/TwitterApiTweepy#hn_Objects). Adds Tweepy as a requirement, adds to view and basic implementation on detail.html.