Examine source code of Magister Auto Week

{
  "manifest_version": 2,
  "name": "Magister Auto Week",
  "description": "De Magister Auto Week extensie voegt een extra knop toe aan het menu waarmee je makkelijk het weekoverzicht kan zien.",
  "version": "2.0",
  "content_scripts": [
    {
      "matches": [
        "*://*.magister.net/*"
      ],
      "js": [
        "/src/MagisterAutoWeek.js"
      ]
    }
  ],
  "permissions": [],
  "browser_action": {
    "default_popup": "/src/popup.html",
    "default_title": "Magister Auto Week",
    "default_icon": {
      "19": "/src/images/19x19.png",
      "38": "/src/images/38x38.png"
    }
  },
  "icons": {
    "16": "/src/images/16x16.png",
    "48": "/src/images/48x48.png"
  }
}