Registers all of the files in the the directory path

def register_directory(self, dirpath, **kwargs):
        """
        Registers all of the files in the the directory path
        """

        kwargs['file_extensions'] = kwargs.get("file_extensions",
                                               self.rdf_formats)
        files = list_files(file_directory=dirpath, **kwargs)
        for fileinfo in files:
            self.register_rml(fileinfo[-1], **kwargs)