Add SSR help

[MichaelCurrin]

See https://github.com/docsifyjs/docsify/tree/develop/packages/docsify-server-renderer

And https://github.com/docsifyjs/docsify/blob/develop/build/ssr.js

And page in official docs tutorial

And the Now repo in docsify

Use GH Pages or Netlify - apply to this repo perhaps for ranking SEO and to unicron.
A small template repo will be good too

[MichaelCurrin]

Maybe create an action