Render without layout on "layout false" [#73]

[hughbien]

Not sure if you'd want this feature, but it mimics Rail's disabling of layouts (as discussed by whitehat101 in #73). Example in controller.rb:

layout 'default_layout.html.haml'

before 'page.html.haml' do
  layout false # render content without layout
end

[whitehat101]

I haven't tried it, but thanks for taking the time to implement this feature.