This is an example for a simple babel execution function rendering markdown content in orgmode using pandoc.
Please add this to your init.el-file:
(require 'ob-markdown)
(org-babel-do-load-languages
'org-babel-load-languages
'((markdown . t)))
Take care that ob-markdown
is found on you disk. In case add (add-to-list 'load-path "PATH")
before.
Then create markdown blocks in orgmode like this:
#+BEGIN_SRC markdown :file output_filename.pdf
title: 'This is the title'
...
# Headline
Here might be some text
#+END