A Web App manifest file from mobile.twitter.com

manifest.json

{
  "background_color":"#ffffff",
  "description":"It's what's happening. From breaking news and entertainment, sports and politics, to big events and everyday interests.",
  "display":"standalone",
  "gcm_sender_id":"49625052041",
  "gcm_user_visible_only":true,
  "icons":[
      {
       "src":"https://ma-0.twimg.com/twitter-assets/responsive-web/web/ltr/icon-default.882fa4ccf6539401.png",
       "sizes":"192x192","type":"image/png"
      }],
  "name":"Twitter Lite",
  "orientation":"portrait",
  "share_target":{"url_template":"compose/tweet?title={title}&text={text}&url={url}"},
  "short_name":"Twitter Lite",
  "start_url":"/",
  "theme_color":"#ffffff"
}