Examine source code of Kosuke Extension

{
  "background": {
    "scripts": [
      "background.js",
      "js/jquery.min.js"
    ]
  },
  "browser_action": {
    "default_icon": "img/icon_64.png",
    "default_popup": "index.html",
    "default_title": "Kosuke"
  },
  "description": "Vous informe si un live de Kosuke est en cours. Envoie une notification bureau si un live commence ou une nouvelle vidéo est mise en ligne sur YouTube.",
  "homepage_url": "http://kosuke.voodoo.ovh//",
  "icons": {
    "16": "img/icon_16.png",
    "32": "img/icon_32.png",
    "48": "img/icon_48.png",
    "64": "img/icon_64.png",
    "128": "img/icon_128.png"
  },
  "manifest_version": 2,
  "name": "Kosuke Extension",
  "browser_specific_settings": {
    "gecko": {
      "id": "collinsandkosuke@mozzila.org",
      "strict_min_version": "57.0"
    }
  },
  "permissions": [
    "notifications"
  ],
  "version": "3.1.8"
}