Merge pull request #72 from fluxcd/move-receiver

Move Receiver API to notification controller

Author: stefanprodan

docs/spec/v1alpha1/README.md

@@ -16,4 +16,5 @@ This is the v1alpha1 API specification for defining the desired state sources of
 
 ## Consumers
 
-* [kustomize-controller](https://github.com/fluxcd/kustomize-controller/)
+* [kustomize-controller](https://github.com/fluxcd/kustomize-controller/)
+* [helm-controller](https://github.com/fluxcd/helm-controller/)