Better specs for happy_discount
Better test for happy_discount
Remove unnecessary expect
Fix test based on previous update
Revert "Remove unnecessary expect"

This reverts commit fda0b0d5ab6f0b20b3008bcc682e9921fd7f07fe.
Final fix!
Added a name to the bar, made sure it can't be changed
Added empty menu_items array
Added a MenuItem class and an add_menu_item method to Bar class
Added happy_discount and set its default to 0
Made happy_discount set-able
Added happy_discount and made it turn off for non-happy-hour times
Added setter method for happy_discount