Examine source code of Fix Pitchfork

{
  "manifest_version": 2,
  "name": "Fix Pitchfork",
  "version": "1.0",
  "description": "Helps you enjoy music more by replacing all of Pitchfork's ratings with 8.0",
  "icons": {
    "48": "icon-48.png",
    "96": "icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.pitchfork.com/*"
      ],
      "js": [
        "fix-pitchfork.js"
      ],
      "css": [
        "fix-pitchfork.css"
      ]
    }
  ]
}