created first test for Dish class
Dish created with name
dishes have a price. tests passing. dish class complete
menu class created. menu can be created with dishes and have dishes added subsequently. tests passing
created Order class. Order currently created with no dishes, test passes
can add a dish to an order, but currently only one of each dish type at a time
can add multiple of one item at a time to the order. can delete an item from the order
can check the total cost of an order
Merge branch 'master' of https://github.com/odelevingne/takeaway