text: var cacheName = 'weatherPWN-step-6-1-1';
  var dataCacheName = 'weatherData-v1';
  var filesToCache = [
  '/',
  '/index.html',
  '/scripts/app.js',
  '/styles/inline.css',
  '/images/clear.png',
  '/images/cloudy-scattered-showers.png',
  '/images/cloudy.png',
  '/images/fog.png',
  '/images/ic_add_white_24px.svg',
  '/images/ic_refresh_white_24px.svg',
  '/images/partly-cloudy.png',
  '/images/rain.png',
  '/images/scattered-showers.png',
  '/images/sleet.png',
  '/images/snow.png',
  '/images/thunderstorm.png',
  '/images/wind.png'];
  
  self.addEventListener('install', function(e) {
  	console.log('[ServiceWorker] Install');
  	e.waitUntil(
  		caches.open(cacheName).then(function(cache) {
  			console.log('[ServiceWorker] Caching app shell');
  			return cache.addAll(filesToCache);
  		})
  	);
  });
  
  self.addEventListener('activate', function(e) {
  	console.log('[ServiceWorker] Activate');
  	e.waitUntil(
  		caches.keys().then(function(keyList) {
  			return Promise.all(keyList.map(function(key) {
  				if(key !== cacheName) {
  					console.log('[ServiceWorker] Removing old cache', key);
  					return caches.delete(key);
  				}
  			}));
  		})
  	);
  });
  
  self.addEventListener('fetch', function(e) {
  	console.log('[ServiceWorker] Fetch', e.request.url);
  	var dataUrl = 'https://publicdata-weather.firebaseio.com/';
  	if(e.request.url.indexOf(dataUrl) === 0) {
  		// Data handler
  		e.respondWith(
  			fetch(e.request)
  				.then(function(response) {
  					return caches.open(dataCacheName).then(function(cache) {
  						cache.put(e.request.url, response.clone());
  						console.log('[ServiceWorker] Fetched&Cached Data');
  						return response;
  					});
  				})
  		);
  	} else {
  		e.respondWith(
  			caches.match(e.request).then(function(response) {
  				return response || fetch(e.request);
  			})
  			);
  	}
  });