initializer('haml.rb') do
<<-'FILE'
Haml::Template.options[:format] = :html5
FILE
end

inject_into_file 'config/application.rb', :after => "# Configure the default encoding used in templates for Ruby 1.9.\n" do 
<<-RUBY
    config.generators do |g|
      g.template_engine :haml
    end
RUBY
end