Update examples

multi-cluster/manifests/README.md

@@ -0,0 +1,37 @@
+# Manifests Example
+
+This example will deploy the [Kubernetes sample guestbook](https://github.com/kubernetes/examples/tree/master/guestbook/) application.
+The app will be deployed into the `fleet-mc-manifest-example` namespace.
+
+The application will be customized as follows per environment:
+
+* Dev clusters: Only the redis leader is deployed and not the followers.
+* Test clusters: Scale the front deployment to 3
+* Prod clusters: Scale the front deployment to 3 and set the service type to LoadBalancer
+
+```yaml
+kind: GitRepo
+apiVersion: fleet.cattle.io/v1alpha1
+metadata:
+  name: manifests
+  namespace: fleet-local
+spec:
+  repo: https://github.com/rancher/fleet-examples/
+  bundleDirs:
+  - manifests
+  targetCustomizations:
+  - name: dev
+    clusterSelector:
+      matchLabels:
+        env: dev
+
+  - name: test
+    clusterSelector:
+      matchLabels:
+        env: test
+
+  - name: prod
+    clusterSelector:
+      matchLabels:
+        env: prod
+```