Setup on IIS walkthrough

Such an awesome idea that works pretty well too, great work!

I am from the windows world, and had to set this up to work with IIS, which basically just included adding the markdown MIME type, and adding the ``navigation.md``, ``index.md`` and ``config.json`` files, which I haven't seen documented anywhere and it took me a bit to figure out that's what it needed to get it going.

So as I corrected my problems I took screenshots and thought I'd try and help out and write a short little walkthrough of how I did it incase anyone else runs into the same problems.

Not sure if you're looking for anything like this or not, but feel free to do what you will with it.

Cheers, and good luck with your project :+1: