less than a minute  

Basically, Helm Charts can be installed as described e.g. in the Helm QuickStart Guide. However, our clusters come with RBAC enabled by default, hence Helm must be installed as follows:

Create a Service Account

Create a service account via the following command:

cat <<EOF | kubectl create -f -
apiVersion: v1
kind: ServiceAccount
 name: helm
 namespace: kube-system
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
 name: helm
 apiGroup: rbac.authorization.k8s.io
 kind: ClusterRole
 name: cluster-admin
 - kind: ServiceAccount
   name: helm
   namespace: kube-system

Initialize Helm

Initialise Helm via helm init --service-account helm. You can now use helm.

In case of failure

In case you have already executed helm init, but without the above service account, you will get the following error: Error: User "system:serviceaccount:kube-system:default" cannot list configmaps in the namespace "kube-system". (get configmaps) (e.g. when you run helm list). You will now need to delete the Tiller deployment (Helm backend implicitly deployed to the Kubernetes cluster when you call helm init) as well as the local Helm files (usually $HELM_HOME is set to ~/.helm):

kubectl delete deployment tiller-deploy --namespace=kube-system
kubectl delete service tiller-deploy --namespace=kube-system 
rm -rf ~/.helm/

Now follow the instructions above. For more details see this Kubernetes Helm issue #2687.