Change markdown extension

I changed the markdown extension name for the readme in the robots.txt
file.
Switch to LESS, modify structure

I switched to LESS for styles. I also completely reworked the document
structure, greatly simplifying the site.
Redo styles, remove files

I removed all files I didn't need and simplified the site to one page,
with new styles.
Tweak index page

I tweaked the index page to look right with the new styles.
Merge branch 'feature/less' into gh-pages