Examine source code of magirans.com

{
  "manifest_version": 2,
  "name": "magirans",
  "description": "this extension allows you to quickly find and view search results directly from magirans.com",
  "version": "1.0",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery.min.js"
      ]
    }
  ],
  "permissions": [
    "activeTab"
  ]
}