/**
* Includes the SimplePie RSS file and sets the cache
*
* @param string $feed
* @param bool $cache
* @param int $cache_duration
*
* @return object|false $sp
*/
public function newSimplePie($feed = '', $cache = RSS_CACHE, $cache_duration = RSS_CACHE_DURATION)
{
require_once LIBS . 'Feeds.php';
$feeds = new Feeds();
return $feeds->newSimplePie($feed, $cache, $cache_duration);
}