doc (website): put man pages for ads-github-tools on the project's web site: https://salewski.github.io/ads-github-tools/

[salewski]

It has happened twice this week that I went looking for the ads-github-tools man pages on the project's web site, but they weren't there:

    https://salewski.github.io/ads-github-tools/

It's not the end of the world since they're installed locally, but it was annoying both times to come up empty handed on the web. This isn't a call for web-only documentation (I generally find that to be a major PITA), but having them online would be useful for casual lookup when already in the browser. It would also make them available as targets for linking.

As a first cut it's probably good enough just to get them up on the site, similar to what is done for my screen-wrappers project:

    https://salewski.github.io/screen-wrappers/man/man1/screen-ls.1.html

Those are presentable, but to really do a first-rate job you would want them to look like Michael Kerrisk's from his Linux man-pages project. For example:

    http://man7.org/linux/man-pages/man1/troff.1.html