Examine source code of FFQRcoder

{
  "manifest_version": 2,
  "name": "__MSG_name__",
  "version": "2.1resigned1",
  "description": "__MSG_description__",
  "icons": {
    "16": "images/icon16_b.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "author": "1011.0011@163.com",
  "background": {
    "scripts": [
      "eventPage.js"
    ]
  },
  "page_action": {
    "browser_style": true,
    "default_icon": {
      "16": "images/icon16.png",
      "24": "images/icon24.png",
      "32": "images/icon32.png"
    },
    "default_title": "__MSG_alert__"
  },
  "homepage_url": "https://github.com/zhcong/firefox-qrcoder",
  "permissions": [
    "tabs",
    "notifications",
    "contextMenus",
    "http://*/",
    "https://*/",
    "ftp://*/",
    "storage",
    "menus"
  ],
  "web_accessible_resources": [
    "images/close.svg"
  ],
  "default_locale": "en-US",
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{af8e2c92-7e14-42b5-9722-2b8f8701ce28}"
    }
  }
}