Added new Classes Animal.cs, Cat.cs, Dog.cs, Pet.cs
Merge branch 'master' of github.com:lefko/Spo12h_Labb1

Conflicts:
	Spo12hLabb1/Animal.cs
	Spo12hLabb1/Cat.cs
	Spo12hLabb1/Dog.cs
	Spo12hLabb1/Pet.cs