add tests for #add_to_basket, wrote methods
add count for items in the basket
refactor out Basket class from User
add size and include? to basket and refactor
Merge branch 'master' into refactor-out-basket-model
Merge branch 'master' into refactor-out-basket-model
Merge pull request #34 from purple-martins-2013/refactor-out-basket-model

Refactor out basket model, add recipes to basket