Examine source code of localivelize

{
  "manifest_version": 2,
  "name": "localivelize",
  "version": "1.1",
  "description": "Switch between local and live server easily.",
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3ba71358-bdaa-46fa-8218-78b6b7b06179}"
    }
  }
}