Examine source code of RetailMeNot Coupons

{
  "manifest_version": 2,
  "name": "RetailMeNot Coupons",
  "version": "1.0",
  "description": "Get the latest coupons and promo codes from RetailMeNot.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d7248600-3f49-4849-bf8a-ce96c60b1881}"
    }
  }
}