Examine source code of Unverify

{
  "manifest_version": 2,
  "name": "Unverify",
  "version": "1.2.5",
  "description": "Unverify everyone on Twitter.",
  "icons": {
    "16": "images/icons/16.png",
    "32": "images/icons/32.png",
    "48": "images/icons/48.png",
    "128": "images/icons/128.png"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/twitter.js"
      ],
      "matches": [
        "*://*.twitter.com/*"
      ],
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "popup/popup.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    "scripts/twitter/verification-badge.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e1aa5cfa-c3b7-4ba8-8de3-e8dceb3baea4}"
    }
  }
}