source for ZCW Python3 Prep Book
this thing is NOT in Markdown, the source is in AsciiDoc. Look at it, it's a better way of doing this for multi-file, multi-topic projects.
sudo gem install asciidoctor-pdf --pre
Asciidoctor PDF is a native PDF converter for AsciiDoc.
to generate targets:
use asciidoctor-pdf index.adoc to get index.pdf
use /usr/local/bin/asciidoctor-epub3 -D EPUB index.adoc to get EPUB/index.epub