Allow ouput options such as  {:compress => true} to be used with LESS templates (this option can only be passed to .to_css, it is ignored by Parser::new()
Added PlainHtmlTemplate
Renamed PlainHtmlTemplate->PlainTemplate, simplified.
Removed extra space
Add Org-mode to engines with Tilt integration
Gemfile: Don't specify RDoc twice
Merge branch 'with-plain-html' of github.com:nathanaeljones/tilt into nathanaeljones-with-plain-html

Conflicts:
	lib/tilt.rb
Tilt::PlainTemplate: Shorter description