update readme

README.md

@@ -3,3 +3,31 @@
 PolicyReporter is a simple tool to watch for PolicyReports in your cluster.
 
 It uses this resources to create Prometheus Metrics from it. It also provides a configuration to push rule validation results to Grafana Loki.
+
+## Installation with Helm v3
+
+Clone the repository and use the following command:
+
+```bash
+helm install policy-reporter ./charts/policy-reporter --set loki=http://lokihost:3100 -n policy-reporter --create-namespace
+```
+
+You can also customize the `values.yaml` to change the default configurations.
+
+### Configure policyPriorities
+
+By default kyverno PolicyReports has no priority or severity for policies. So every passed rule validation will be processed as notice, a failed validation is processed as error. To customize this you can configure a mapping from policies to fail priorities. So you can send them as warnings instead of errors.
+
+```yaml
+# values.yaml
+# policyPriorities example diff
+
+policyPriorities:
+    check-label-app: warning
+```
+
+## Example Outputs
+
+![Grafana Loki](https://github.com/fjogeleit/policy-reporter/blob/main/docs/images/grafana-loki.png?raw=true)
+
+![Prometheus Metrics](https://github.com/fjogeleit/policy-reporter/blob/main/docs/images/prometheus.png?raw=true)