Examine source code of CoinRankDisplay

{
  "manifest_version": 2,
  "name": "CoinRankDisplay",
  "version": "4resigned1",
  "description": "Displays coinrank directly in challonge brackets.",
  "browser_action": {
    "default_icon": "icons/coinDisplay-96.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "96": "icons/coinDisplay-96.png"
  },
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.challonge.com/*"
      ],
      "js": [
        "coinDisplay.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b355d920-c2c5-4a49-9362-bd7f1b8937d2}"
    }
  }
}