/**
* Sets the configuration for the Asset Helper
*
* @param array $config key value pairs of configurations
* - 'host' string: URL of the static asset host. eg: 'http://static.example.org'
* - 'timestamp' boolean: Whether or not to automatically append the timestamp of
* the files for cache-busting.
* @return void
*/
public static function config(array $config)
{
self::$_config = array_merge(self::$_config, $config);
}