Examine source code of Agora

{
  "manifest_version": 2,
  "name": "Agora",
  "version": "1.3",
  "description": "Resolves wikilinks within a specified context, by default anagora.org; also enables lookups in a context menu.",
  "icons": {
    "48": "icons/agora.png"
  },
  "permissions": [
    "menus",
    "storage",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "polyfill.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "polyfill.js",
        "jquery.js",
        "public/js/app.js"
      ]
    }
  ],
  "commands": {
    "linkify": {
      "suggested_key": {
        "default": "Alt+Shift+L",
        "linux": "Ctrl+Shift+L"
      },
      "description": "Send a 'linkify' event"
    }
  }
}