Personally, I use git [0] along with GNU stow [1], combined with making the files directly from a literate Readme.org (e.g. [2]). I sync this repository between machines to update files, and when I make changes in the org-mode Readme file it automatically generates the new file. There are ways to pull in changes made to that file directly, but haven't needed to do that. My repo doesn't walk you through it completely,…
(I use GNU Stow too, though have not thought to create a literate version of my scripts and hacks.)