Update README.md

README.md

-# Helm Charts
+# HIFIS Cloud Platform Helm Charts
 
+This repository provides the Helm charts to install the HIFIS Technical Platform on Kubernetes.
+
+The charts are hosted on the DESY IT Chart Museum. To install the charts just run:
+
+```
+$ helm repo add desy-it https://charts.desy.de/desy-it
+$ helm repo install my-release desy-it/hifiscp
+```