Add support for MultiMarkdown

[deveiant]

I like MultiMarkdown, and could use it for all kinds of stuff myself, so it'd be nice to be able to turn on support for it. Something like:

bc = BlueCloth.new( my_document )
bc.multimarkdown = true
puts bc.to_html

or

puts BlueCloth.new( my_document, :multimarkdown => true ).to_html

[andrea]

I also would appreciate this feature. Also it should be possible to access the properties

Asusming that the document is

title: Hello
Date: 18 jan 2006

Content content

it should be possible to write:

bc = BlueCloth.new( multiMarkDown )
bc.multimarkdown = true

puts bc['title']