Examine source code of Anon Quizlet

{
  "manifest_version": 2,
  "name": "Anon Quizlet",
  "description": "Never sign into quizlet again!",
  "version": "1.0",
  "content_scripts": [
    {
      "matches": [
        "*://*.quizlet.com/*"
      ],
      "js": [
        "display_selected.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/quizlet_anon_16.png",
    "48": "icons/quizlet_anon_48.png",
    "128": "icons/quizlet_anon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{22df3291-b3c3-4815-895e-5aea063e1c21}"
    }
  }
}