Display iCook Facebook Page

* Embed view controllers in a UITabBarControllerr
* Update source info with Facebook Page URL
Rename RSS-Source-Info to Reader-Source-Info
Load reader source in App Delegate
Setup refresh and share buttons for Facebook fan page
Fix webpage reload and progress HUD
Read posts from iCook Facebook fan page using Graph API
Use ICFeedItemCell to display posts of Facebook fan page
Rename tab for Facebook fan page
Fix Facebook session and login UI switching
Implement pull to refresh in Facebook pan page list
Move Facebook graph path from Atlas to info.json
Add icons for tab bar items and share button
Rearrange Facebook session state checking
Update Facebook fan page source
Rename ICFanPageWebViewController
Display fan page either in webView or in listView depending on user's logged in status
Double tap navigation bar to close active Facebook session
Update info.json with Facebook page feed
Display list of Facebook fan page posts from RSS feed
Remove ICFanPageListViewController and ICFanPageWebViewController