Examine source code of Lapi Stream

{
  "manifest_version": 2,
  "name": "Lapi",
  "version": "2.1.0",
  "description": "Notification et annonce de live de Lapi",
  "icons": {
    "128": "icone.png"
  },
  "browser_action": {
    "default_icon": "off.png",
    "default_title": "Lapi - Notification",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "notifications"
  ],
  "author": "Isak"
}