Examine source code of Nextify Wuxia

{
  "description": "Adds a next link when in Firefox Reader Mode",
  "manifest_version": 2,
  "name": "Nextify Wuxia",
  "version": "1.1resigned1",
  "icons": {
    "48": "icons/border-48.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "idle"
  ],
  "browser_action": {
    "default_icon": "icons/border-48.pngg",
    "default_title": "Nextify Wuxia"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.wuxiaworld.com/*"
      ],
      "js": [
        "borderify.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{70e46842-5693-4284-8716-670dc4db02ef}"
    }
  }
}