* Still trying to figure out layout contraint runtime warnings
* Add tabcontroller selectindex call to app delegate but still does not
switch the starting view to the middle tab. Requires further debugging.
Created Add item view, added ViewController attributes and re-ordered
the TabBarController so the list is first
Fixed AddViewController so that it can now be dismissed and solve
TabBarContrller strating tab problem, but now longer require the
functionality so it is not included.

Next steps are:
1) add date picker for expiration date
2) begin adding items to fridge
Merge pull request #2 from mick31/bare_bones

Bare bones