requesetiong Full refactor suggestions

Nice job adding user as a param! We can clean this up a little bit.
```ruby
def initialize(user, items)
  @user = user
  @items = items
  gets_grocery_list
  gets_drink
end
```
The `produce_random_item` -- ask Liz how her code does this. It's super clean, only set when/if needed, and is reusable.