Examine source code of SimpleTimer-Extensions

{
  "name": "SimpleTimer-Extensions",
  "version": "1.0.2",
  "manifest_version": 2,
  "description": "SimpleTimerのChrome拡張機能",
  "browser_action": {
    "default_icon": "icon/icon16.png",
    "default_title": "SimpleTimer-Extensions",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cee4cc03-56c3-4ad0-9277-e4d69f67fd31}"
    }
  }
}