Handle error on listing limit ranges, update example deploy and readme

example/deploy.yaml

@@ -1,3 +1,40 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: default-request-adder
+  namespace: kube-system
+---
+
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: default-request-adder
+  namespace: kube-system
+rules:
+  - apiGroups: [""]
+    resources: ["namespaces"]
+    verbs: ["list"]
+  - apiGroups: [""]
+    resources: ["limitranges"]
+    verbs: ["list","create"]
+
+---
+
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: default-request-adder
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: default-request-adder
+subjects:
+  - kind: ServiceAccount
+    name: default-request-adder
+    namespace: kube-system
+---
+
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -20,6 +57,7 @@ spec:
       labels:
         app: default-request-adder
     spec:
+      serviceAccountName: default-request-adder
       containers:
         - name: default-request-adder
           resources: