Revert "Use more readable asciidoc"
Revert "Use more readable asciidoc"

The asciidoctor documentation apparently does not apply to GitHub.
This reverts commit 92a5eb594be7d2d3c56bf255bb5b05298a36ca71.

brunchboy/afterglow,ryfow/afterglow,dandaka/afterglow,brunchboy/afterglow,brunchboy/afterglow,ryfow/afterglow,dandaka/afterglow