Examine source code of ISS live tracker

{
  "manifest_version": 2,
  "name": "ISS Live Tracker",
  "author": "Pythack",
  "version": "1.4.1",
  "description": "Track the ISS in real time",
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "./settings/settings.html"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "ISS Live Tracker",
    "default_popup": "./popup.html",
    "browser_style": true
  }
}