Adda failing test for Topping.initialize.
created an intialize and reader for topping name
created an intialize and reader for topping name
failed test to check if topping is vegetarian
created a instance variable vegetarian that can be acessed and is defaulted to true
added failing test to check for the addition of toppings on pizza class
created initialize method for Pizza class
created failing test to default Pizza to cheese when no arguments are passed
Added default to class Pizza to cheese when no arguments are passed