protected function modifyResponse(array $response = array())
{
$this->url->discardChanges();
if (preg_match('~github\\.com/([^/]+)/([a-z0-9]+)~i', $this->url, $matches)) {
$response['html'] = '<script type="text/javascript" src="https://gist.github.com/' . $matches['1'] . '/' . $matches['2'] . '.js"></script>';
}
return $response;
}