Examine source code of Beatnik

{
  "manifest_version": 2,
  "name": "Beatnik",
  "version": "1.8resigned1",
  "description": "The Beatnik extension redirects music streaming links to the Beatnik site for a better sharing experience.",
  "homepage_url": "https://www.beatnikapp.com",
  "icons": {
    "64": "icons/beatnik.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2699b0de-9b84-4a15-aee1-8867c42d7444}"
    }
  }
}