Returns the contents of the README.md file that describes the dataset
        in detail and contains attribution information.

def README(self):
        """
        Returns the contents of the README.md file that describes the dataset
        in detail and contains attribution information.
        """
        path = find_dataset_path(
            self.name, data_home=self.data_home, fname="README.md"
        )
        with open(path, 'r') as f:
            return f.read()