void OnEnable()
{
Debug.Log ("------------------");
Debug.Log ("BUILDER DESIGN PATTERN");
IRobotBuilder oldRobot = new OldRobotBuilder();
RobotEngineer engineer = new RobotEngineer(oldRobot);
engineer.MakeRobot();
Robot firstRobot = engineer.GetRobot();
Debug.Log ("First Robot built");
Debug.Log (firstRobot.ToString());
}