Added Epsilon-First code and updated the view.
Merged with master after epsilon-greedy is on master.'
Added tests for rest view.
Merged with master after cleaning up epsilon-greedy.
Added documentation for epsilon-first.
Addressed Scott's and Eric's comments, moved duplicate method _get_winning_arm_names out to superclass Epsilon.
Merge branch 'master' of https://github.com/Yelp/MOE into norases_335_create_epsilon_first_bandit_endpoint
Addressed Eric's comments. Wrote test for static function in class Epsilon
Added ValueError test for Epsilon class and comments about raising ValueError.
Merge pull request #350 from Yelp/norases_335_create_epsilon_first_bandit_endpoint

Implement Epsilon-First bandit endpoint