Merge pull request #428 from mozilla/add-twitter-og-cards

add twitter and open graph cards

server/server.js

@@ -58,7 +58,10 @@ app.engine(
     partialsDir: 'views/partials/',
     helpers: {
       availableLanguages,
-      l10nDev: conf.l10n_dev
+      l10nDev: conf.l10n_dev,
+      baseUrl: conf.base_url,
+      title: 'Firefox Send',
+      description: 'Encrypt and send files with a link that automatically expires to ensure your important documents don’t stay online forever.'
     }
   })
 );