diff --git a/readme.md b/readme.md
index 1589adf..e261a14 100644
--- a/readme.md
+++ b/readme.md
@@ -176,4 +176,12 @@ And method `getNotification`, return `Notification` type.
     {
         return new InvoicePaid();
     }
+```
+```php
+// app/User.php
+
+    public function routeNotificationForSlack($notification)
+    {
+        return 'hook';
+    }
 ```
\ No newline at end of file