[error] Example 1 - Render a DataFrame with many different types of columns

[mnauge]

using my binder :
https://mybinder.org/v2/gh/quantopian/qgrid-notebooks/master?filepath=index.ipynb

i've an error on the first cell:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-2-ef1f68cba5a6> in <module>
     10     'D' : ["foo", "bar", "buzz", "bippity","boppity", "foo", "foo", "bar", "zoo"] })
     11 df_types['E'] = df_types['D'] == 'foo'
---> 12 qgrid_widget = qgrid.show_grid(df_types, show_toolbar=True)
     13 qgrid_widget

/srv/conda/envs/notebook/lib/python3.7/site-packages/qgrid/grid.py in show_grid(data_frame, show_toolbar, precision, grid_options, column_options, column_definitions, row_edit_callback)
    509                        column_definitions=column_definitions,
    510                        row_edit_callback=row_edit_callback,
--> 511                        show_toolbar=show_toolbar)
    512 
    513 

/srv/conda/envs/notebook/lib/python3.7/site-packages/qgrid/grid.py in __init__(self, *args, **kwargs)
    625 
    626         if self.df is not None:
--> 627             self._update_df()
    628 
    629     def _grid_options_default(self):

/srv/conda/envs/notebook/lib/python3.7/site-packages/qgrid/grid.py in _update_df(self)
    818         self._unfiltered_df = self._df.copy()
    819 
--> 820         self._update_table(update_columns=True, fire_data_change_event=False)
    821         self._ignore_df_changed = False
    822 

/srv/conda/envs/notebook/lib/python3.7/site-packages/qgrid/grid.py in _update_table(self, update_columns, triggered_by, scroll_to_row, fire_data_change_event)
    877                        isinstance(col_series, pd.PeriodIndex)
    878 
--> 879             if type(df.index) == pd.core.index.MultiIndex:
    880                 self._multi_index = True
    881                 for idx, cur_level in enumerate(df.index.levels):

AttributeError: module 'pandas.core' has no attribute 'index'