Examine source code of VME

{
  "name": "VME",
  "version": "1.2.1",
  "manifest_version": 2,
  "author": "hadish",
  "icons": {
    "16": "i.png",
    "32": "i.png",
    "48": "i.png",
    "128": "i.png"
  },
  "permissions": [
    "scripting",
    "tabs",
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "i.png",
    "default_title": "VME",
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4c4e652c-c934-406e-8f77-3c617e2938fe}"
    }
  }
}