Examine source code of vidIQ for Chrome

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "vidIQ for Chrome",
  "short_name": "vidIQ",
  "description": "Optimize and manage your YouTube Channels",
  "version": "1.0",
  "manifest_version": 2,
  "icons": {
    "128": "128.png"
  },
  "app": {
    "launch": {
      "web_url": "http://app.vidiq.com/"
    }
  }
}