md2man - markdown to manpage
https://github.com/sunaku/md2man#readme

md2man is a Ruby library and command-line program that converts
Markdown documents into UNIX manual pages (both roff and HTML)
using the [Redcarpet](https://github.com/vmg/redcarpet) library.

## Version 1.5.1 (2013-03-06)

Patch:

  * All this time, this project's documentation stated that Redcarpet's
    `no_intra_emphasis` option was enabled, but in reality, it was not.
    The documentation has been corrected and the option remains disabled.

  * In web pages generated by the `md2man:web` Rake task:

    * deactivate cross references to external manual pages

    * don't assume that NAME section contains a tagline

    * sort man/ subdirectories in the HTML index page

    * fix link to index page from webs directly in man/

    * add generator META tag to HTML output template

    * only apply special styling to the first H1 child

    * parse title from first paragraph containing hyphen

Other:

  * rename HISTORY to VERSION so it sorts after README

  * tests should exercise engines with default options