Examine source code of Easy Quote

{
  "manifest_version": 2,
  "name": "Easy Quote",
  "version": "1.0",
  "description": "Allows you to easyly create Quotes.",
  "icons": {
    "48": "icons/logo-48.png"
  },
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "page": "backgroundpage/backgroundpage.html",
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cf2c72b9-2685-4fdf-aabf-261847376109}"
    }
  }
}