code: def _render_files(self):
          
          output = ''
          # render files
          files = self.config.get('files', [])
          # add delimiter
          if files:
              output += '\n{0}\n\n'.format(self.FILE_SECTION_DELIMITER)
          for f in files:
              mode = f.get('mode', DEFAULT_FILE_MODE)
              # add file to output
              file_output = '# path: {0}\n'\
                            '# mode: {1}\n\n'\
                            '{2}\n\n'.format(f['path'], mode, f['contents'])
              output += file_output
          return output
docs: Renders additional files specified in ``self.config['files']``