{
  "short_name": "Ranger",
  "name": "Ranger",
  "icons": [
    {
      "src": "/static/img/img_bookfast.png",
      "type": "image/png",
      "sizes": "192x192"
    }
  ],
  "start_url": "/",
  "background_color": "#ecf0f2",
  "display": "fullscreen",
  "theme_color": "#34aeab",
  "gcm_sender_id": "742352227936"
}