Examine source code of Foxes-cool

{
  "name": "Foxes",
  "version": "1.0.1",
  "description": "Fox images at your finger tips",
  "manifest_version": 2,
  "author": "Arthur Melton",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "libraries/Foxes-Web/dist/foxes.min.js",
        "content.user.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1bd3ce23-32f4-4df2-9743-6765ff494765}"
    }
  }
}