Examine source code of QR Code Buddy

{
  "manifest_version": 2,
  "name": "QR Code Buddy",
  "description": "The simple QR Code Generator that does the thing and does it well.",
  "version": "1.2.1",
  "icons": {
    "16": "resources/logo/logo-16.png",
    "48": "resources/logo/logo-48.png",
    "128": "resources/logo/logo-128.png"
  },
  "options_page": "page/settings.html",
  "browser_action": {
    "default_title": "Generate QR Code",
    "default_popup": "page/popup.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "./resources/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "qr-code-buddy@jm26.net"
    }
  }
}