Update examples

single-cluster/helm-kustomize/README.md

@@ -0,0 +1,17 @@
+# Helm Kustomize Example
+
+This example will deploy the [Kubernetes sample guestbook](https://github.com/kubernetes/examples/tree/master/guestbook/) application as
+packaged as a Helm chart downloaded from a third party source and will modify the helm chart using Kustomize.
+The app will be deployed into the `fleet-helm-kustomize-example` namespace.
+
+```yaml
+kind: GitRepo
+apiVersion: fleet.cattle.io/v1alpha1
+metadata:
+  name: helm-kustomize
+  namespace: fleet-local
+spec:
+  repo: https://github.com/rancher/fleet-examples/
+  paths:
+  - helm-kustomize
+```