Examine source code of WikiWorld

{
  "manifest_version": 2,
  "name": "WikiWorld",
  "description": "This extension consists of being able to search for a definition of the word on wikipedia all make a right click on it",
  "version": "1.1resigned1",
  "icons": {
    "48": "icons/logo_48.png"
  },
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "anonymousfearfr@gmail.com",
      "strict_min_version": "42.0"
    }
  }
}