Initial commit, bar initializes with the bars name to pass test.
Bar cannot change name to pass test.
Update menu_items method, add Food class, and add menu item method works to pass test.
Update bar to pass retrieve menu items test.
Give bar default happy hour discount of 0 to pass test.
Update bar.rb to pass set happy hour discount method to pass test.
Add functionality to return discount with happy hour to pass test.
Add functionality to pass test to keep happy hour discount between zero and one.
Write tests to know when it is happy hour and is not happy hour otherwise.
Write test to not allow happy hour discount during normal hourse
Write test to not allow happy hour discount during normal hours
Update tests and bar.rb to have bar know to give happy hour discount.