helm repo add kubeinvaders https://lucky-sideburn.github.io/helm-charts/
helm repo update
kubectl create namespace kubeinvaders
helm install kubeinvaders --set-string config.target_namespace="namespace1\,namespace2" \
-n kubeinvaders kubeinvaders/kubeinvaders --set ingress.enabled=true --set ingress.hostName=kubeinvaders.io --set deployment.image.tag=v1.9.6
See the values.yaml for a full list of configuration options.