Examine source code of The Coven

{
  "manifest_version": 2,
  "name": "The Coven",
  "description": "An extension for The Coven! Get notification when I'm starting a stream on Twitch.",
  "version": "1.0.2",
  "author": "VooDoo",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "32": "/assets/icons/default_32.png",
    "64": "/assets/icons/default_64.png",
    "128": "/assets/icons/default_128.png",
    "256": "/assets/icons/default_256.png",
    "512": "/assets/icons/default_512.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "The Coven",
    "default_icon": {
      "32": "/assets/icons/default_32.png",
      "64": "/assets/icons/default_64.png",
      "128": "/assets/icons/default_128.png",
      "256": "/assets/icons/default_256.png",
      "512": "/assets/icons/default_512.png"
    }
  },
  "permissions": [
    "notifications",
    "alarms"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3b2186f1-3c8c-4ca8-9d67-de9681a1d52d}"
    }
  }
}