Writing tests for 1.02
Task 1.02 finished for OO
Merge branch 'OO' of https://github.com/ahemenson/coffeemachine into OO

Conflicts:
	src/main/java/br/ufpb/dce/aps/coffeemachine/CoffeeMachine.java
	src/test/java/br/ufpb/dce/aps/coffeemachine/MyCoffeeMachineTest.java
Task 1.02 finished for OO