Ability to create a grocery group with name and password, re-password fields

Logo, slogan and buttons to Join Existing Group or Create Group

Ability to join a group. Show the existing groups and a password field to authenticate

Adding an Item should include:
Item's name
Item's description
Item's location
Show the item requester's name

Swiping the list item should cross-out the item's name/description. It should not delete the item

Long-clicking a grocery list item should bring up an option to delete the item from the list

Ability to Add Store(s)
Ability to join other grocery groups from Settings page

The list activity page that shows the items, dropdown box to select which list to show, and an '+' button to add new items