def application
      return @app if @app
      
      @stack.use Rack::HtmlValidator if self.options[:validate]
      @stack.run Rack::HtmlMockup.new(self.project)
      
      @app = @stack
    end
def application
      return @app if @app
      
      @stack.use Rack::HtmlValidator if self.options[:validate]
      @stack.run Rack::HtmlMockup.new(self.project)
      
      @app = @stack
    end
Build the final application that get's run by the Rack Handler