module Middleman::CoreExtensions::Routing::InstanceMethods

def with_layout(layout_name, &block)

end
page "/admin/login.html"
page "/admin/"
with_layout :admin do
Takes a block which allows many pages to have the same layout 
def with_layout(layout_name, &block)
  old_layout = layout

  set :layout, layout_name
  instance_exec(&block) if block_given?
ensure
  set :layout, old_layout
end