Examine source code of Translator!

{
  "manifest_version": 2,
  "name": "Translator! ",
  "description": "This addon simplifies the task of going to Google Translator Website and typing out the stuff. Instead, download this ultra-light extension which makes your world easier to translate to multiple languages.",
  "version": "2.1resigned1",
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "script.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{09e26ae9-e9c1-477c-80a6-99934212f2fe}"
    }
  }
}