Render markdown from nested directories

[snowe2010]

Is there any way to render markdown from nested directories? I have categories of markdown pages that I want to store, something like:

  category_controller.ex
  category1
   |--- index.html.md
   |--- page1InCat1.html.md
   |--- page2InCat1.html.md
   |--- page3InCat1.html.md
   |--- ...
  category2
   |--- index.html.md
   |--- page1InCat2.html.md
   |--- page2InCat2.html.md
   |--- page3InCat2.html.md
   |--- ...

but I would like to both store these md files elsewhere besides next to the controller, and also render nested markdown files, which currently doesn't seem to work.