Examine source code of BuildTeam - Notifier

{
  "manifest_version": 2,
  "name": "BuildTeam - Notifier",
  "description": "This extension allows the user to be notified about certain Steemit events.",
  "version": "1.9.9resigned1",
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "BuildTeam!"
  },
  "background": {
    "scripts": [
      "/dist/action_cable.js",
      "jquery.js",
      "eventPage.js"
    ],
    "persistent": true
  },
  "icons": {
    "16": "icon.png",
    "167": "icon_167.png"
  },
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "http://www,minnowbooster.net/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{21b10531-923e-41ad-8ee2-feed5f71cf1c}"
    }
  }
}