minor changes, correcting spelling of famous italian cheese
Merge branch 'master' of https://github.com/alexnowak/headfirst.git

Conflicts:
	src/headfirst/pizzastore/CheesePizza.java
	src/headfirst/pizzastore/NYStylePizzaStore.java
	src/headfirst/pizzastore/PepperoniPizza.java
	src/headfirst/pizzastore/ingredients/MozzarellaCheese.java
	src/headfirst/pizzastore/ingredients/NYPizzaIngredientFactory.java