Upgrade instruction

README.md

@@ -37,6 +37,10 @@ Check the wpa resource is accessible using kubectl
 kubectl get wpa
 ```
 
+### Upgrade
+
+Please follow [this document](UPGRADE.md) for upgrading Worker Pod Autoscaler.
+
 # Example
 Do install the wpa crd and wpa deployment before going with the example. (Please check above.)
 

UPGRADE.md

@@ -0,0 +1,18 @@
+# Upgrade Worker Pod Autoscaler
+
+## Upgrade from v0.2 to v1
+
+### Breaking Changes
+There is no backward breaking change from `v0.2` to `v1`.
+
+### Recommended Actions
+Update the WorkerPodAutoScaler CRD from `v1alpha1` to `v1` using below:
+```
+kubectl apply -f ./artifacts/crd.yaml
+```
+
+Note: Support for `v1alpha1` CRD version is still there, but it would be discontinued in the future releases.
+
+### Changes
+- [v1.0.0](https://github.com/practo/k8s-worker-pod-autoscaler/releases/tag/v1.0.0)
+- [v1.0.0-beta](https://github.com/practo/k8s-worker-pod-autoscaler/releases/tag/v1.0.0-beta)