(feature request) Support for markdown

[denis-peshkov]

Hi, what are you think about add support for markdown like on Github .md files?

Perhaps it could be implemented like https://github.com/ligershark/WebOptimizer.Markdown

[soerendalby]

@madskristensen has previously released a site displaying md files from a github-page. It could be very interesting to see a an integration of some of the ideas from there.