This is my starter template for RevealJS slides. All the files are static and there is no build system. Clone the repo and remove .git and then add your slides to index.html.
You could then host the slides on github pages by setting the repo to serve all contents from the root of the repo.
For local development serve the files with a development server.
python -m http.server
or
browser-sync --serveStatic --files "index.html"
See the reveal.js documentation for adding slide content.