update install procedure

README.md

@@ -6,7 +6,26 @@
 Exports helm release, chart, and version statistics in the prometheus format.
 
 # Installation
-* A helm chart is available in this [repository](https://hub.helm.sh/charts/sstarcher/helm-exporter).
+## Prerequisites
+
+- Kubernetes 1.16+
+- Helm 3+
+
+## Get Repo Info
+
+```console
+helm repo add sstarcher https://shanestarcher.com/helm-charts/
+helm repo update
+```
+
+_See [helm repo](https://hub.helm.sh/charts/sstarcher/helm-exporter) for command documentation._
+
+## Install Chart
+
+```console
+# Helm
+$ helm install helm-exporter sstarcher/helm-exporter
+```
 * `helm install helm-exporter sstarcher/helm-exporter` will install and metrics should scrape automatically if prometheus is running
 * If using Grafana you can use this Dashboard to have a list of what's running https://grafana.com/dashboards/9367