Add Recipe class
  - Created Recipe.py that holds the Recipe class.
  - The Recipe class represents a recipe for a particular dish which includes a list of ingredients, nutritional information, etc.
Add Ingredient class
  - Create Ingredient.py to hold code for the Ingredient class.
  - The Ingredient class holds the information for an ingredient in a Recipe object such as the name of the ingredient, measurements and how it is prepared.
Add Step class
  - Create Step.py to hold code for the Step class.
  - The Step class represents a single step/instruction for a Recipe object.
Add RecipeInfo class
  - Create RecipeInfo.py that holds the code for the RecipeInfo class.
  - The RecipeInfo class represents the extra information of a Recipe object such as nutritional information.
Add FoodGroups class
  - Create FoodGroups.py that holds code for FoodGroups class.
  - The FoodGroups class is to help classify what food groups a given Recipe object has. Inspiration for these groups was from the P90X workout/diet program.