Document warning for kubernetes users to install an ingress controller #155
Description
A pre-requisite of an operator install on vanilla kubernetes implementations is that an ingress controller is available to assign ip addresses etc... Although the operator installs an ingress resource, it is assumed an nginx (?) ingress controller is already available.
Documentation must warn users:
"Installation requires an Ingress Controller to be running on the cluster (e.g., Nginx, Traefik, or minikube addons enable ingress)."