add all static content to cache on app update

sw-cache-add-all.js

const staticResourcesAndPath = [
  '/skeleton',
  'js/main.js',
  'css/main.css',
  'imgs/icon.png',
  'https://fonts.gstatic.com/s/roboto/v15/2UX7WLTfW3W8TclTUvlFyQ.woff',
  'https://fonts.gstatic.com/s/roboto/v15/d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff'
];
self.addEventListener('install', function (event) {
  event.waitUntil(
    caches.open('myStaticCacheName').then(function (cache) {
      return cache.addAll(staticResourcesAndPath);
    })
  );
});