controll

var speed : float = 0.01;

    function Update () {
        if (Input.touchCount > 0 &&
          Input.GetTouch(0).phase == TouchPhase.Moved) {

            var touchDeltaPosition:Vector2 = Input.GetTouch(0).deltaPosition;
            transform.Translate (-0,
                        -touchDeltaPosition.x * speed, 0);

        }
    }