Examine source code of IRCTC-helper

{
  "manifest_version": 2,
  "name": "IRCTC-helper",
  "version": "1.0",
  "description": "Helps browse Indian Railways online booking system in an easier manner",
  "content_scripts": [
    {
      "matches": [
        "*://www.irctc.co.in/*"
      ],
      "js": [
        "app.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9227297d-4ebc-44bf-a16f-dd2fd7cc9e16}"
    }
  }
}