*: rework readme

Signed-off-by: Paweł Krupa (paulfantom) <pawel@krupa.net.pl>

docs/access-ui.md

@@ -0,0 +1,29 @@
+# Access UIs
+
+Prometheus, Grafana, and Alertmanager dashboards can be accessed quickly using `kubectl port-forward` after running the quickstart via the commands below. Kubernetes 1.10 or later is required.
+
+> Note: There are instructions on how to route to these pods behind an ingress controller in the [Exposing Prometheus/Alermanager/Grafana via Ingress](customizations/exposing-prometheus-alertmanager-grafana-ingress.md) section.
+
+## Prometheus
+
+```shell
+$ kubectl --namespace monitoring port-forward svc/prometheus-k8s 9090
+```
+
+Then access via [http://localhost:9090](http://localhost:9090)
+
+## Grafana
+
+```shell
+$ kubectl --namespace monitoring port-forward svc/grafana 3000
+```
+
+Then access via [http://localhost:3000](http://localhost:3000) and use the default grafana user:password of `admin:admin`.
+
+## Alert Manager
+
+```shell
+$ kubectl --namespace monitoring port-forward svc/alertmanager-main 9093
+```
+
+Then access via [http://localhost:9093](http://localhost:9093)