Examine source code of Licna Karta

{
  "manifest_version": 2,
  "name": "Licna Karta",
  "description": "Demonstracija funkcionalnosti za citanje licne karte",
  "version": "1.1resigned1",
  "icons": {
    "48": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "applications": {
    "gecko": {
      "id": "notari@licnaKarta.com",
      "strict_min_version": "50.0"
    }
  },
  "background": {
    "scripts": [
      "eventPage.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/message.svg"
  },
  "permissions": [
    "nativeMessaging",
    "tabs"
  ]
}