docs: def _get_feed_data(self, file_paths):
          """ get data to display in feed file
          """
          rv = {}
          for i in file_paths:
              # TODO(crow): only support first category
              _ = i.split('/')
              category = _[-2]
              name = _[-1].split('.')[0]
              page_config, md = self._get_config_and_content(i)
              parsed_md = tools.parse_markdown(md, self.site_config)
              rv.setdefault(category, {})
              rv[category].update(
                  {
                      i: {
                          'title': page_config.get('title', ''),
                          'name': name.decode('utf-8'),
                          'content': parsed_md,
                          'date': page_config.get('date', '')
                          }
                      }
                  )
          return rv