Examine source code of Block RFID Reader/Writer

{
  "description": "Native Messaging plugin for RFID block device",
  "manifest_version": 2,
  "name": "Block RFID Reader/Writer",
  "version": "1.1resigned1",
  "icons": {
    "32": "icons/rfid.png"
  },
  "applications": {
    "gecko": {
      "id": "Block@quantumtracking.co",
      "strict_min_version": "50.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery.js",
        "content-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_action": {
    "default_icon": "icons/rfid.png"
  },
  "permissions": [
    "nativeMessaging"
  ]
}