Create DishCell to implement favorites.
Add cell identifier
old xcode fix
Implement Initial favorites
Merge branch 'favorites' of github.com:GrinnellAppDev/Grinnell-Menu-iOS into favorites
Update README
Update README
Make favorites persist
Merge branch 'favorites' of github.com:GrinnellAppDev/Grinnell-Menu-iOS into favorites
Closing Settings properly refreshes screen
items can't be added to the fave array twice
Only one copy of a dish can appear in faves
Small fix

Removing star from an item also removes it from the item elsewhere in
the app. Still need to remove or add the dish from the favorites "venue"
VenueView updates on star/unstar tap
Change cell selection color
Add gesture recognizer to swipe back from dish nutrition page
fix bottom padding. Increase star size.
Add basic start upward animation from center position temporarily
Add rotation on star
Copy of star animates upwards. Reduce time for quicker animation.
Add unfavoriting animation: Just the opposite of the the favoriting animation
Maintain position of tapped cell when favorites array is present.