break helloWorld example into two examples:

- one for declaring a ConfigMap as resources
- one for declaring a ConfigMap from ConfigMapGenerator and rolling
update

examples/helloWorld/kustomization.yaml

@@ -6,9 +6,4 @@ commonLabels:
 resources:
 - deployment.yaml
 - service.yaml
-
-configMapGenerator:
-- name: the-map
-  literals:
-    - altGreeting="Good Morning!"
-    - enableRisky="false"
+- configMap.yaml