Step 1a: create project and a test class
Step 1b: create Game class
Step 2a: enrich test
Step 2b: make test compile
Step 2c: add assert
Step 2d: make test pass
Step 3a: add another test (that fails)
Step 3b: remove Game creation duplication
Step 3c: correct code to make it pass
Step 3d: remove roll loop duplication (part 1)
Step 3e: remove roll loop duplication (part 2)
Step 3f: remove roll loop duplication (part 3)
Step 3g: remove roll loop duplication (part 4)
Step 3h: move method order for more visibility
Step 4a: add a spare test
Step 4b: since we need to refactor, ignore failing test for now
Step 4c: add rolls and currentRoll
Step 4d: refactor score method
Step 4e: remove unneccessary attribute score
Step 4f: reactive test but still failing