init.php

<?php
\Larakit\StaticFiles\Manager::package('larakit/sf-bootstrap-switch')
    ->usePackage('larakit/sf-bootstrap')
    ->js('//cdnjs.cloudflare.com/ajax/libs/bootstrap-switch/3.3.2/js/bootstrap-switch.min.js')
    ->css('//cdnjs.cloudflare.com/ajax/libs/bootstrap-switch/3.3.2/css/bootstrap3/bootstrap-switch.min.css')
    ->jsPackage('sf-bootstrap-switch.js')
    ->cssPackage('sf-bootstrap-switch.css')
    ->setSourceDir('public');
if(class_exists('\Larakit\Page\PageDnsPrefetch')) {
    \Larakit\Page\PageDnsPrefetch::register('//cdnjs.cloudflare.com');
}