Where are some simple sample Leanpub Flavoured Markdown or Markua books?

Leanpub Flavoured Markdown
https://github.com/leanpub/sample-leanpub-markdown-book
https://github.com/leanpub/sample-leanpub-markdown-book/archive/master.zip
https://leanpub.com/sample-leanpub-markdown-book/

Markua
https://github.com/leanpub/sample-leanpub-markua-book
https://github.com/leanpub/sample-leanpub-markua-book/archive/master.zip
https://leanpub.com/sample-leanpub-markua-book