Update README.md
Add Apester to README.md
@@ -47,6 +47,7 @@ container images and config changes are propagated to the cluster.
- [ABA English](https://www.abaenglish.com)
- [APPUiO](https://appuio.ch)
+- [Apester](https://apester.com)
- [ArangoDB Oasis](https://arangodb.com/managed-service)
- [Avisi](https://avisi.nl)
- [Babylon Health](https://www.babylonhealth.com/)
