/**
* Returns a singleton instance of InstaPush
* @param $appId Instapush Applciation Id.
* @param $appSecret Instapush Application Secret.
* @return InstaPush
*/
public static function getInstance($appId, $appSecret, $options = array())
{
if (!isset(self::$_instance)) {
self::$_instance = new InstaPush($appId, $appSecret, $options);
}
return self::$_instance;
}
