docs: function getFileFromReq(req, res) {
      var file;
      file = req.params[0];
      if ('' === file || 'undefined' === typeof file) {
          res.status(404).send('No file specified.');
          return false;
      }
      else if (file.lastIndexOf('\/') === (file.length - 1)) {
          // Removing the trailing slash because it creates:
          // Error: ENOTDIR in fetching the file.
          file = file.substring(0, file.length - 1);
      }
      return file;
  }