Allow user to set attributes for assets tags.


For your purposes you can pass additional attributes to helpers `js` and `css`.

    != css('normalize', { media: 'print', data: { confirm: 'Are you sure to do this?', delete: function(){return true} } })

Result:
    
    <link rel="stylesheet" href="/css/normalize.css" media="print" data-confirm="Are you sure to do this?" data-delete />