comment about AR base on Recommender model.
refactor javascript updateForm callback
WIP. test in progress for article update method.
Merge branch 'channel_learns_preferences_from_browser' of https://github.com/mule-deer-2013/NewsShark into channel_learns_preferences_from_browser

Conflicts:
	app/views/channels/show.html.erb
controller tests for ArticlesController#update.
channel learns about articles liked over time. confirmed functionality through browser for first several likes, but not thereafter..
Merge branch 'master' into channel_learns_preferences_from_browser

Conflicts:
	app/models/recommender.rb
refactoring and full testing for Recommender class, factoring (and testing) lots into the Article and Channel models.
new factory for channel with articles
controller tests for article preferences.
Recommender model changes.
channels controller assigns most relevant articles for show metohd.
bug fix. feedback on an article correctly redirects to channel show
some refactoring and view file with keywords displayed for tracking / sanity check
Merge pull request #24 from mule-deer-2013/channel_learns_preferences_from_browser

Channel learns preferences from browser