Examine source code of globe-trotting

{
  "manifest_version": 2,
  "name": "globe-trotting",
  "version": "1.1resigned1",
  "description": "travelling sites shortcuts",
  "browser_action": {
    "default_title": "travel add-ons",
    "default_popup": "travel.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a3bcbacd-4afb-4db4-b46d-074c66f35534}"
    }
  }
}