Examine source code of Bitcoin Rate & Conversion

{
  "manifest_version": 2,
  "name": "Bitcoin Rate & Conversion",
  "version": "1.4resigned1",
  "description": "Show the Bitcoin current rate with the possibility to make a fast conversion.",
  "icons": {
    "96": "icons/96.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/96.png",
    "default_title": "BTC Price",
    "default_popup": "popup/show_price.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c3e3f6b7-1174-44bb-8954-23dba01057fe}"
    }
  }
}