added data store to view controllers
main table view cell xib in progress
main table view cell should be working, started setting up main view controller for its table view
fixed tiny issue with fetched results controller methods in main view controller
Merge branch 'master' into Model

Conflicts:
	Greatist Message Publisher/Greatist Message Publisher.xcodeproj/project.pbxproj
	Greatist Message Publisher/Greatist Message Publisher/GRTComposePostViewController.m
	Greatist Message Publisher/Greatist Message Publisher/GRTMainViewController.m
	Greatist Message Publisher/Greatist Message Publisher/GRTPostDetailViewController.m
fixed tiny double reference issue
fixed tiny file path issue
added outlets for post feed and response icons
starting hooking up main table view cell xib