Examine source code of Wikifier

{
  "name": "Wikifier",
  "description": "Search the currently browsed wiki for any selected text",
  "version": "0.5.3",
  "permissions": [
    "contextMenus",
    "activeTab",
    "scripting"
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "page_action": {
    "default_title": "Select text in this page and search using the context menu"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{f2b215aa-04a5-4395-bc76-20bc4cb6bb3b}"
    }
  }
}