Refactor places show action.
  * Remove temp args variable.
  * Update parameter list of recommender to take the current user and
  an optional opts hash.
  * Default strategy set to SimpleGooglePlaces.
Rename strategy to recommendation strategy.
Delete old strategy model.
Rename strategies table to recommendation_strategies
Uncommented configuration block for api key inclusion.
Refactor references to strategy to refer to recommendation_strategy.
Update error message on abstract strategy class.
Refactor rspec tests for recommendations and recommender in light of
strategy refactorings.

Removed recommender factory from factories file.