Themed support for reveal.js for KubeCon's or general CNCF level Presentations

[hh]

We do a lot of presentations in reveal.js

It would be nice to have templates for presentations at KubeCon and other CNCF events.

The process for creating them is here:
https://github.com/hakimel/reveal.js/blob/master/css/theme/README.md

Presentations can be written in many formats including:

• markdown :: https://revealjs.com/markdown/
• pandoc :: https://pandoc.org/chunkedhtml-demo/10.8-background-in-reveal.js-beamer-and-pptx.html
• org :: https://github.com/yjwen/org-reveal