public static function pluginAsset($plugin, $filename, $params = array())
    {
        $template = self::get('atomik.plugin_assets_tpl', 'app/plugins/%s/assets');
        $dirname = rtrim(sprintf($template, ucfirst($plugin)), '/');
        $filename = '/' . ltrim($filename, '/');
        return self::url($dirname . $filename, $params, false, false);
    }