'Show that a user can unstar a gist.'

def test_unstar(self):

    self.basic_login()
    cassette_name = self.cassette_name('unstar')
    with self.recorder.use_cassette(cassette_name):
        gist = self.gh.gist('8de9b9b0ae2e45383d85')
        assert (gist is not None)
        assert (gist.unstar() is True)
