Examine source code of Recon

{
  "manifest_version": 2,
  "name": "Recon",
  "description": "This is a tool that provides various options for advance and versatile search.",
  "homepage_url": "https://github.com/aditya12anand/Recon",
  "version": "2.1resigned1",
  "icons": {
    "48": "icons/recon-48.png",
    "96": "icons/recon-96.png"
  },
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background_firefox.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0f5f675-9db0-4cac-9a17-1a1630e0fa6d}"
    }
  }
}