Examine source code of Jenkins Build Watcher

{
  "manifest_version": 2,
  "name": "Jenkins Build Watcher",
  "version": "0.0.4resigned1",
  "description": "A Firefox addon that shows the status of your Jenkins build.",
  "icons": {
    "16": "images/jenkins-16.png",
    "32": "images/jenkins-32.png",
    "48": "images/jenkins-48.png"
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": "images/jenkins-32.png",
    "default_title": "Jenkins Build Watcher"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "storage",
    "alarms",
    "notifications"
  ],
  "options_ui": {
    "page": "options/options.html"
  },
  "applications": {
    "gecko": {
      "id": "jenkins-build-watcher@jonas-hellmann.de"
    }
  }
}