added a webmanifest (#1023)

server/layout.js

@@ -36,6 +36,8 @@ module.exports = function(state, body = '') {
           content="${state.baseUrl}${assets.get('send-twitter.jpg')}"
         />
         <meta property="og:url" content="${state.baseUrl}" />
+        <meta name="theme-color" content="#0a84ff" />
+        <link rel="manifest" href="/app.webmanifest" />
 
         <title>${state.title}</title>
 

server/routes/index.js

@@ -70,6 +70,7 @@ module.exports = function(app) {
   app.get('/oauth', language, pages.blank);
   app.get('/legal', language, pages.legal);
   app.get('/jsconfig.js', require('./jsconfig'));
+  app.get('/app.webmanifest', language, require('./webmanifest'));
   app.get(`/download/:id${ID_REGEX}`, language, pages.download);
   app.get('/unsupported/:reason', language, pages.unsupported);
   app.get(`/api/download/:id${ID_REGEX}`, auth.hmac, require('./download'));

server/routes/webmanifest.js

@@ -0,0 +1,28 @@
+const assets = require('../../common/assets');
+
+module.exports = function(req, res) {
+  const manifest = {
+    name: 'Firefox Send',
+    short_name: 'Send',
+    lang: req.language,
+    icons: [
+      {
+        src: assets.get('favicon-144.png'),
+        type: 'image/png',
+        sizes: '144x144'
+      },
+      {
+        src: assets.get('send_logo.svg'),
+        type: 'image/svg',
+        sizes: '192x192 512x512'
+      }
+    ],
+    start_url: '/',
+    display: 'standalone',
+    orientation: 'portrait',
+    theme_color: '#0a84ff',
+    background_color: 'white'
+  };
+  res.set('Content-Type', 'application/manifest+json');
+  res.json(manifest);
+};