Adding social buttons to favorited photos

Added Social framework
Added a tweet and email button to the favorites photos once they've been favorited .
Added instagramPost property to my custom cell

•Added a property to PhotoTableViewCell for an instagram post so each cell knows about it's instagram post.

• Did some refactoring in RootPhotosViewController to make use of the instagramPost property on the cellForRowAtIndexPath
Added Tweet and email buttons to

Can now tweet and email favorites from rootviewcontroller and from favorites viewcontroller. Weird bug on favorites controller when it's not attaching the image to the email. Works for the tweet though. hmm.
Wrapipng up work for the weekend

Removed some logs, cleaned up the code a bit.