Create README.MD

Author: Kaizhe

examples/README.MD

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+# Examples
+
+## Environment
+**Namespace** | **Service Account** | **Role** | **Pod Security Policy**
+--- | --- | --- | ---
+privileged | privileged-sa | psp-privileged-role | psp-privielged
+restricted | restricted-sa | psp-restricted-role | psp-restricted
+
+In order to enforce the pod security policies, the service accounts need to be authorized to use the pod security policy.
+
+**Role** | **Rule Verb** | **Rule API Group** | **Rule Resources** | **Rule Resource Name** 
+--- | --- | --- | --- | ---
+privileged-role | use | policy | podsecuritypolicies | psp-privileged
+restricted-role | use | policy | podsecuritypolicies | psp-restricted
+
+## Try out examples
+1. setup k8s cluster
+2. run `make build` to build the `kube-psp-advisor` binary
+3. under the examples directory, run `./deploy.sh`
+
+## Explanation of examples
+1. deploy `restrcited` and `privileged` namespaces with services account, roles, rolebindings and pods to k8s cluster
+2. `kube-psp-advisor` generates pod security policies seperately for namespaces `restricted` and `privileged` and then apply to cluster
+3. test pod security policies with pods that comply with pod security policies (pods-allows.yaml)
+4. test pod security policies with pods that violate pod security policies (pods-deny.yaml)