Added file handler for markdown files (*.MD)
Fixed minor copy typos.
Added rewriting of markdown documents to dir-listing.php which should be the base (or main) dlist processing script. Each user of dlist should change the name (and will typically move it to a more convenient place).
Added markdown processing into dir-listing.php for greater expandability, and ease. Both now and down the road.
Added a test document for markdown.
Added another optio to future (more handlers).
Cleaned up the markdown check and the  massaging.
Added stylesheet/theme future item.
Added some help text about handlers, and tunring handlers 'on', also some general file clean-up and simplification.
Fixed some HTML output formatting (extra tab and newline characters.

Added some extra CSS for markdown files. Added another font for <code> blocks.
Added a copy of AnonymousPro webfont, and some help text in utilizing them.
Added markdown-extra for a special edge case, and activated that special edge case in README.md
Added links to our two resources: font and images.
Added the first attempt at explaining handlers.
Added another example of placing dir-listing in a different directory.