use matplotlib methods for plotting

        Parameters
        ----------
        atDataset : allantools.Dataset()
            a dataset with computed data
        errorbars : boolean
            Plot errorbars. Defaults to False
        grid : boolean
            Plot grid. Defaults to False

def plot(self, atDataset,
             errorbars=False,
             grid=False):
        """ use matplotlib methods for plotting

        Parameters
        ----------
        atDataset : allantools.Dataset()
            a dataset with computed data
        errorbars : boolean
            Plot errorbars. Defaults to False
        grid : boolean
            Plot grid. Defaults to False
        """
        if errorbars:
            self.ax.errorbar(atDataset.out["taus"],
                             atDataset.out["stat"],
                             yerr=atDataset.out["stat_err"],
                             )
        else:
            self.ax.plot(atDataset.out["taus"],
                         atDataset.out["stat"],
                         )
        self.ax.set_xlabel("Tau")
        self.ax.set_ylabel(atDataset.out["stat_id"])
        self.ax.grid(grid, which="minor", ls="-", color='0.65')
        self.ax.grid(grid, which="major", ls="-", color='0.25')