Update README

- Use a more convenient kube mechanizm:
 https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands\#wait

README.md

@@ -62,7 +62,10 @@ Though for a quickstart a compiled version of the Kubernetes [manifests](manifes
 # Note that due to some CRD size we are using kubectl server-side apply feature which is generally available since kubernetes 1.22.
 # If you are using previous kubernetes versions this feature may not be available and you would need to use kubectl create instead.
 kubectl apply --server-side -f manifests/setup
-until kubectl get servicemonitors --all-namespaces ; do date; sleep 1; echo ""; done
+kubectl wait \
+	--for condition=Established \
+	--all CustomResourceDefinition \
+	--namespace=monitoring
 kubectl apply -f manifests/
 ```