Update README.md

Author: richardhj

README.md

@@ -1,9 +1,11 @@
-# contao-knp-menu
+# Contao KnpMenu
 
 [![Latest Version on Packagist][ico-version]][link-packagist]
 
 Provides Contao navigation modules as instances of [KnpMenu](https://github.com/KnpLabs/KnpMenuBundle).
 
+This extension is stable and supported from Contao >=4.9 and will be integrated into the Contao Core at some time, see https://github.com/contao/contao/pull/3838.
+
 
 ## Install