Examine source code of ClownFinder

{
  "manifest_version": 2,
  "name": "ClownFinder for /r/CFB & /r/NFL",
  "version": "0.2",
  "description": "Find clowns on the internet",
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/r/CFB/*",
        "*://*.reddit.com/r/nfl/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{90e95d99-aefd-4ce1-b992-be953065f97f}"
    }
  }
}