code: def objs_to_mark_down(cls, tables, file_path=None, keys=None,
                            pretty_columns=True, quote_numbers=True):
          
          keys = keys or tables.keys()
          ret = ['#### ' + key + '\n' + tables[key].obj_to_mark_down(
              pretty_columns=pretty_columns, quote_numbers=quote_numbers)
                 for key in keys]
          ret = '\n\n'.join(ret)
          cls._save_file(file_path, ret)
          return ret
docs: This will return a str of multiple mark down tables.
          :param tables:         dict of {str <name>:SeabornTable}
          :param file_path:      str of the path to the file
          :param keys:           list of str of the order of keys to use
          :param pretty_columns: bool if True will make the columns pretty
          :param quote_numbers:  bool if True will quote numbers that are strings
          :return:               str of the converted markdown tables