Examine source code of Refined Stack Overflow

{
  "manifest_version": 2,
  "name": "Refined Stack Overflow",
  "description": "Show answers you upvoted / your answers first",
  "version": "1.3.1",
  "content_scripts": [
    {
      "matches": [
        "*://*.stackoverflow.com/*",
        "*://*.stackexchange.com/*",
        "*://askubuntu.com/*"
      ],
      "js": [
        "script.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "icons": {
    "48": "icon.png",
    "96": "icon@2x.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{06b14489-8990-4214-94e8-54a6e2751da0}"
    }
  }
}