Examine source code of CO2ok Ninja

{
  "manifest_version": 2,
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "version": "0.4.2",
  "default_locale": "en",
  "options_ui": {
    "page": "pages/options.html"
  },
  "browser_action": {
    "default_icon": "assets/img/icon128.png",
    "default_popup": "pages/options.html"
  },
  "icons": {
    "16": "assets/img/icon16.png",
    "48": "assets/img/icon48.png",
    "128": "assets/img/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "activeTab",
    "http://*/*",
    "https://*/*",
    "storage",
    "webRequest",
    "cookies",
    "alarms"
  ],
  "applications": {
    "gecko": {
      "id": "CO2ok@CO2ok.Ninja"
    }
  },
  "web_accessible_resources": [
    "assets/img/*",
    "assets/css/*",
    "pages/*"
  ]
}