Update README.md
Adding that EventHub is supported now.
@@ -80,6 +80,7 @@ KEDA has a number of "scalers" that can both detect if a deployment should be ac
* AWS Simple Queue Service
* Prometheus
* Redis Lists
+* Azure Event Hub
You can view other planned scalers [in our wiki and issue backlog](https://github.com/kedacore/keda/wiki/Scaler-prioritization).
