Render the display in this style.
Overrides StylePluginBase::render
function render() {
  $rows = array();
  foreach ($this->view->result as $row) {
    // @todo: Include separator as an option.
    $rows[] = $row;
  }
  return array(
    '#theme' => $this
      ->themeFunctions(),
    '#view' => $this->view,
    '#options' => $this->options,
    '#rows' => $rows,
  );
}