fixed error where I was not actually pushing the arrays into the results memo in the total_items_by_name method
Added methods to seed file for populating a small number of units and foods, which will be important for manual testing.
Added Faker to gemfile so that I can generate fake email addresses for purposes of seeding the database.  ##Faker.uses
Wrote seeding functional but un-refactored seeding algorithim
Made changes to seeding algorithim so that the all of the users generated would have a current shopping list
Changed seeding algorithim so that the first user and all the odd users have coke on their lists as well