I am not the author of this library, but I've found it to be incredibly useful putting together documentation for GitHub/GitLab repos. If you're working with JavaScript, this library combines really nicely with jsdoc-to-markdown [1] to completely automate API documentation in the README.md (see [2] for an example).

[1] https://github.com/jsdoc2md/jsdoc-to-markdown

[2] https://github.com/sparkeditor/piece-table