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manifest.json
{
  "app": {
    "urls": [
      "http://www.duckiedeck.com/play/tug-of-war?ref=cws"
    ],
    "launch": {
      "web_url": "http://www.duckiedeck.com/play/tug-of-war?ref=cws"
    }
  },
  "update_url": "https://clients2.google.com/service/update2/crx",
  "description": "Which is stronger: a machine or a big animal? The game broadens your child’s knowledge.",
  "name": "Tractor Games - Tug of War at Duckie Deck",
  "permissions": [
    "notifications"
  ],
  "icons": {
    "128": "icon_128.png"
  },
  "manifest_version": 2,
  "version": "1.1"
}