wp_enqueue_styles not doing anything…

Hello,

I downloaded the underscore starter template… and cleared the function file so i can start fresh..

I was putting this into my template from :
http://generatewp.com/register_style/

// Register Style
function demo_styles() {

	wp_register_style( 'menu', 'css/menu.css', false, false );
	wp_enqueue_style( 'menu' );

}

// Hook into the 'wp_enqueue_styles' action
add_action( 'wp_enqueue_styles', 'demo_styles' );

I figured this is the proper way to put the CSS styles … but it is not loading anything… even if i remove wp_register_style and replace it with wp_enqueue_style …

i check the source code.. and nothing shows up… i even copied the same lines to the twenty fourteen template and it won’t work..