Using Emacs batch mode in Spacemacs

Rendering a presentation out of an Org file is a snap when working in Emacs.

On the command line there is an option too by using the batch mode of Emcas:

emacs --batch my-presentation.org -l ~/.emacs.d/init.el -f org-re-reveal-export-to-html

Or have watchmedo help out to automate parts:

watchmedo shell-command -p '*.org' -i '.#*' \
  -c 'Emacs "${watch_src_path}" --batch -l ~/.emacs.d/init.el -f org-re-reveal-export-to-html'