fix missing args to ContinuousWalkingDemo object
fix missing args to ContinuousWalkingDemo object

RobotLocomotion/director,manuelli/director,manuelli/director,openhumanoids/director,openhumanoids/director,openhumanoids/director,patmarion/director,RobotLocomotion/director,manuelli/director,mitdrc/director,mitdrc/director,manuelli/director,RobotLocomotion/director,patmarion/director,mitdrc/director,RobotLocomotion/director,patmarion/director,patmarion/director,patmarion/director,RobotLocomotion/director,openhumanoids/director,openhumanoids/director,mitdrc/director,mitdrc/director,manuelli/director