Add simple foursquare strategy and update tests.
  * Take foursquare data from api call and save to database if
  they are not new.
  * Update tests to reflect Recommender and recommendation addition to
  in Places create action.
Merge pull request #35 from banana-slugs-2014/foursquare_basic

Add simple foursquare strategy and update tests.
![](http://media.giphy.com/media/IMrZiP8MuZVrq/giphy.gif)