Examine source code of Piczel Notifier

{
  "name": "Piczel Notifier",
  "version": "0.1.2",
  "manifest_version": 2,
  "permissions": [
    "*://*.piczel.tv/*",
    "storage",
    "notifications",
    "cookies"
  ],
  "description": "An unofficial notifier for Piczel.",
  "icons": {
    "256": "icons/icon256.png"
  },
  "web_accessible_resources": [
    "defaults.json"
  ],
  "background": {
    "page": "global.html"
  },
  "browser_action": {
    "default_icon": "icons/icon256.png",
    "default_popup": "popup.html"
  },
  "applications": {
    "gecko": {
      "id": "myextension2@mydomain.com"
    }
  }
}