// Use this for initialization
    void Start()
    {
        player = GameObject.FindWithTag("Player").GetComponent <PlayerMovementScript> ();
        var lBtnScript = leftBtn.GetComponent <PlayerMovementButton> ();
        var rBtnScript = rightBtn.GetComponent <PlayerMovementButton> ();

        lBtnScript.handler = () => { player.MoveLeft(); };
        rBtnScript.handler = () => { player.MoveRight(); };
    }