Examine source code of Outlook Opener

{
  "description": "Opens outlook.live.com after clicking on it",
  "manifest_version": 2,
  "name": "Outlook Opener",
  "version": "1.1resigned1",
  "icons": {
    "48": "icons/outlook-48.png",
    "96": "icons/outlook-96.png"
  },
  "background": {
    "scripts": [
      "outlook.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/outlook-32.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b67577ef-bde3-4f32-8897-8735d6473945}"
    }
  }
}