code: function forceReady(timeout) {
      if (timeout === undefined) {
        queue.ready();
        return;
      }
      var handle = setTimeout(function() {
        queue.ready();
      }, timeout);
      Polymer.whenReady(function() {
        clearTimeout(handle);
      });
    }
docs: Forces polymer to register any pending elements. Can be used to abort
  waiting for elements that are partially defined.
  @param timeout {Integer} Optional timeout in milliseconds