Examine source code of Blackjack Helper

{
  "manifest_version": 2,
  "name": "Addon_01",
  "version": "1.0",
  "description": "Tableau BJ",
  "icons": {
    "128": "icons/Google_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "sketch/content.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icons/Google_128.png",
    "default_popup": "sketch/MyPopup.html",
    "default_title": "My addon !",
    "brower_style": true
  },
  "web_accessible_ressources": [
    "content.js"
  ],
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bc6ac9f8-c741-407f-92c3-a9ad35834f3b}"
    }
  }
}