Examine source code of Hide RYM ratings

{
  "manifest_version": 2,
  "name": "Hide rym ratings",
  "version": "1.0.1",
  "description": "Hides RateYourMusic ratings.",
  "icons": {
    "48": "icons/sonemic-512.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.rateyourmusic.com/*"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e9415306-54f1-4461-b926-67f5ccd22702}"
    }
  }
}