Add a section about Websockets

[rimolive]

It would be good a specific section about Websockets and how to use it in OpenShift since there are some specifics things to implement(like the port, Secure Websockets (wss://), etc.)

[coreydaley]

This should help explain how to use Web Sockets on OpenShift: https://developers.openshift.com/en/managing-port-binding-routing.html