/** static public function get_instance
* Returns the singleton instance
* of the Gravatar Object as a reference
*
* @param array optional settings
* @action optionally creates the instance
* @return Log Object reference
*/
public static function get_instance($settings = array())
{
if (is_null(self::$_instance)) {
self::$_instance = new Gravatar($settings);
}
return self::$_instance;
}
