diff --git a/src/registerServiceWorker.js b/src/registerServiceWorker.js
index 099ce508402a153ee02eaa67067ea55174128fa6..cbf0b7c9df4a1e9dbbb8c90cecafe06736c60a41 100644
--- a/src/registerServiceWorker.js
+++ b/src/registerServiceWorker.js
@@ -1,108 +1,115 @@
 // In production, we register a service worker to serve assets from local cache.
-
 // This lets the app load faster on subsequent visits in production, and gives
 // it offline capabilities. However, it also means that developers (and users)
 // will only see deployed updates on the "N+1" visit to a page, since previously
-// cached resources are updated in the background.
-
-// To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
-// This link also includes instructions on opting out of this behavior.
+// cached resources are updated in the background. To learn more about the
+// benefits of this model, read https://goo.gl/KwvDNy. This link also includes
+// instructions on opting out of this behavior.
 
-const isLocalhost = Boolean(
-  window.location.hostname === 'localhost' ||
-    // [::1] is the IPv6 localhost address.
-    window.location.hostname === '[::1]' ||
-    // 127.0.0.1/8 is considered localhost for IPv4.
-    window.location.hostname.match(
-      /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
-    )
-);
+const isLocalhost = Boolean(window.location.hostname === 'localhost' ||
+// [::1] is the IPv6 localhost address.
+window.location.hostname === '[::1]' ||
+// 127.0.0.1/8 is considered localhost for IPv4.
+window.location.hostname.match(/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/));
 
 export default function register() {
     if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
-    // The URL constructor is available in all browsers that support SW.
+        // The URL constructor is available in all browsers that support SW.
         const publicUrl = new URL(process.env.PUBLIC_URL, window.location);
         if (publicUrl.origin !== window.location.origin) {
-      // Our service worker won't work if PUBLIC_URL is on a different origin
-      // from what our page is served on. This might happen if a CDN is used to
-      // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
+            // Our service worker won't work if PUBLIC_URL is on a different origin from
+            // what our page is served on. This might happen if a CDN is used to serve
+            // assets; see https://github.com/facebookincubator/create-react-app/issues/2374
             return;
         }
 
         window.addEventListener('load', () => {
             const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
 
-            if (!isLocalhost) {
-        // Is not local host. Just register service worker
-                registerValidSW(swUrl);
-            } else {
-        // This is running on localhost. Lets check if a service worker still exists or not.
+            if (isLocalhost) {
+                // This is running on localhost. Lets check if a service worker still exists or
+                // not.
                 checkValidServiceWorker(swUrl);
+
+                // Add some additional logging to localhost, pointing developers to the service
+                // worker/PWA documentation.
+                navigator
+                    .serviceWorker
+                    .ready
+                    .then(() => {
+                        console.log('This web app is being served cache-first by a service worker. To learn more, vis' +
+                                'it https://goo.gl/SC7cgQ');
+                    });
+            } else {
+                // Is not local host. Just register service worker
+                registerValidSW(swUrl);
             }
         });
     }
 }
 
 function registerValidSW(swUrl) {
-    navigator.serviceWorker
-    .register(swUrl)
-    .then((registration) => {
-        registration.onupdatefound = () => {
-            const installingWorker = registration.installing;
-            installingWorker.onstatechange = () => {
-                if (installingWorker.state === 'installed') {
-                    if (navigator.serviceWorker.controller) {
-              // At this point, the old content will have been purged and
-              // the fresh content will have been added to the cache.
-              // It's the perfect time to display a "New content is
-              // available; please refresh." message in your web app.
-                        console.log('New content is available; please refresh.');
-                    } else {
-              // At this point, everything has been precached.
-              // It's the perfect time to display a
-              // "Content is cached for offline use." message.
-                        console.log('Content is cached for offline use.');
+    navigator
+        .serviceWorker
+        .register(swUrl)
+        .then((registration) => {
+            registration.onupdatefound = () => {
+                const installingWorker = registration.installing;
+                installingWorker.onstatechange = () => {
+                    if (installingWorker.state === 'installed') {
+                        if (navigator.serviceWorker.controller) {
+                            // At this point, the old content will have been purged and the fresh content
+                            // will have been added to the cache. It's the perfect time to display a "New
+                            // content is available; please refresh." message in your web app.
+                            console.log('New content is available; please refresh.');
+                        } else {
+                            // At this point, everything has been precached. It's the perfect time to
+                            // display a "Content is cached for offline use." message.
+                            console.log('Content is cached for offline use.');
+                        }
                     }
-                }
+                };
             };
-        };
-    })
-    .catch((error) => {
-        console.error('Error during service worker registration:', error);
-    });
+        })
+        .catch((error) => {
+            console.error('Error during service worker registration:', error);
+        });
 }
 
 function checkValidServiceWorker(swUrl) {
-  // Check if the service worker can be found. If it can't reload the page.
-    fetch(swUrl)
-    .then((response) => {
-      // Ensure service worker exists, and that we really are getting a JS file.
-        if (
-        response.status === 404 ||
-        response.headers.get('content-type').indexOf('javascript') === -1
-      ) {
-        // No service worker found. Probably a different app. Reload the page.
-            navigator.serviceWorker.ready.then((registration) => {
-                registration.unregister().then(() => {
-                    window.location.reload();
+    // Check if the service worker can be found. If it can't reload the page.
+    fetch(swUrl).then((response) => {
+        // Ensure service worker exists, and that we really are getting a JS file.
+        if (response.status === 404 || response.headers.get('content-type').indexOf('javascript') === -1) {
+            // No service worker found. Probably a different app. Reload the page.
+            navigator
+                .serviceWorker
+                .ready
+                .then((registration) => {
+                    registration
+                        .unregister()
+                        .then(() => {
+                            window
+                                .location
+                                .reload();
+                        });
                 });
-            });
         } else {
-        // Service worker found. Proceed as normal.
+            // Service worker found. Proceed as normal.
             registerValidSW(swUrl);
         }
-    })
-    .catch(() => {
-        console.log(
-        'No internet connection found. App is running in offline mode.'
-      );
+    }).catch(() => {
+        console.log('No internet connection found. App is running in offline mode.');
     });
 }
 
 export function unregister() {
     if ('serviceWorker' in navigator) {
-        navigator.serviceWorker.ready.then((registration) => {
-            registration.unregister();
-        });
+        navigator
+            .serviceWorker
+            .ready
+            .then((registration) => {
+                registration.unregister();
+            });
     }
 }