Update Icons

nuxt.config.js

 module.exports = {
   build: {
     extractCSS: true,
-    extend(config, {isClient}) {
+    extend (config, {isClient}) {
       config.resolve.alias['create-api'] = `./create-api-${isClient ? 'client' : 'server'}.js`
     }
   },
   head: {
     titleTemplate: 'Nuxt HN | %s',
     meta: [
-      { hid: 'description', name: 'description', content: 'HackerNews clone built with Nuxt.js' },
-      { property: 'og:type', content: 'website' },
-      { property: 'og:title', content: 'Nuxt.js HackerNews' },
-      { property: 'og:description', content: 'HackerNews clone built with Nuxt.js' },
-      { property: 'og:image', content: 'https://cloud.githubusercontent.com/assets/904724/26784102/0d2f8000-49fc-11e7-8091-2b66901c73ee.png' },
-      { property: 'twitter:card', content: 'summary_large_image' },
-      { property: 'twitter:site', content: '@nuxt_js' },
+      {property: 'og:type', content: 'website'},
+      {property: 'og:title', content: 'Nuxt.js HackerNews'},
+      {property: 'og:description', content: 'HackerNews clone built with Nuxt.js'},
+      {
+        property: 'og:image',
+        content: 'https://cloud.githubusercontent.com/assets/904724/26784102/0d2f8000-49fc-11e7-8091-2b66901c73ee.png'
+      },
+      {property: 'twitter:card', content: 'summary_large_image'},
+      {property: 'twitter:site', content: '@nuxt_js'},
     ]
   },
   loading: {
     color: '#66e8ad'
   },
   manifest: {
+    name: 'Nuxt Hacker News',
+    description: 'HackerNews clone built with Nuxt.js',
     theme_color: '#41b883',
-    defaultIcon: {
-        sizes: '16x16'
-    }    
+    icons: [
+      {
+        src: '/favicon.ico',
+        sizes: '16x16',
+        type: 'image/x-icon'
+      },
+      {
+        src: '/logo_192.png',
+        sizes: '192x192',
+        type: 'image/png'
+      },
+      {
+        src: '/logo_512.png',
+        sizes: '512x512',
+        type: 'image/png'
+      }
+    ]
   },
   modules: [
     '@nuxtjs/pwa',