/**
* Implements Factory pattern
* Strongly inspired by WP Maintenance Mode of Frank Bueltge ^_^ (@link https://github.com/bueltge/WP-Maintenance-Mode)
*
* Access this plugins working instance
*
* @wp-hook after_setup_theme
* @return object of this class
*/
public static function get_instance()
{
NULL === self::$instance and self::$instance = new self();
return self::$instance;
}
