update readme

Author: maorfr

README.md

@@ -2,10 +2,12 @@
 
 Cain is a backup and restore tool for Cassandra on Kubernetes. It is named after the DC Comics superhero [Cassandra Cain](https://en.wikipedia.org/wiki/Cassandra_Cain).
 
+Now an official part of the Helm [incubator/cassandra](https://github.com/helm/charts/tree/master/incubator/cassandra) chart!
+
 ## Install
 
 ```
-wget -qO- https://github.com/maorfr/cain/releases/download/0.1.1/cain.tar.gz | sudo tar xvz -C /usr/local/bin
+wget -qO- https://github.com/maorfr/cain/releases/download/0.1.0/cain.tar.gz | sudo tar xvz -C /usr/local/bin
 ```
 
 ## Build from source