merge api_to_controller with iOS7 branch
connecting api generated models to frontend

added observer for feeds and feed items
added KVO pod to project
added code so that feeds are added to user on feedItemUpdater
connected models to frontend
changed feedItemsArray to an NSSet to eliminate duplicates
observer calls loadPage method which updates front end
uncommented date set on feedItem View
Merge pull request #20 from cloudspace/67420916_api_to_controller

67420916 api to controller