FB Friends: NSCoding for image model
FB Friends: user data object
FF Friends: add spacer image
FF Friends: name -> firstName, lastName
FF Friends: add array of user models
FF Friends: full serialization of image model
FF Friends: add view for custom table cell
FF Friends: update image view and main view
FF Friends: add context for users loading
FF Friends: save model in app delegate
FF Friends: data source for table view