modify to use Checkout form

booking.module

@@ -768,6 +768,7 @@ function booking_library() {
     'version' => '1.0',
     'js' => array(
       'https://js.stripe.com/v1/' => array(),
+			'https://checkout.stripe.com/checkout.js' => array(),
       $module_path . '/booking.stripe.js' => array(),
     ),
   );