Examine source code of FUo

{
  "manifest_version": 2,
  "name": "FUo",
  "version": "1.0.2",
  "description": "Prevents duo from nagging about out of date operating systems and browsers.",
  "homepage_url": "https://github.com/yourfin/fuo",
  "icons": {
    "16": "icons/fuo-16.png",
    "48": "icons/fuo-48.png",
    "128": "icons/fuo-128.png"
  },
  "offline_enabled": false,
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "http://*.duosecurity.com/*",
    "https://*.duosecurity.com/*"
  ],
  "background": {
    "scripts": [
      "FUo-background.js"
    ]
  }
}