Refactoring moveForward and moveBackward
Avoiding some repetition by refactoring turnRight and turnLeft
Reduce access to position
Merge pull request #3 from yolo-test/refactoring-moving-forward-and-backward

Refactoring moveForward and moveBackward
Merge pull request #4 from rafeca/avoiding-repetition

Avoiding some repetition by refactoring turnRight and turnLeft