private function prepareMessage(Bundle $trendingBundle)
{
$bundleName = $trendingBundle->getName();
$url = 'knpbundles.com/' . $trendingBundle->getOwnerName() . '/' . $bundleName;
return str_replace(array('{name}', '{url}'), array($bundleName, $url), $this->twitterParams['tweet_template']);
}