Add &vault=true to SDK script

Author: jshawl

save-payment-method/README.md

@@ -2,6 +2,8 @@
 
 This folder contains example code for a PayPal Save Payment Method integration using both the JS SDK and Node.js to complete transactions with the PayPal REST API.
 
+[View the Documentation](https://developer.paypal.com/docs/checkout/save-payment-methods/during-purchase/js-sdk/paypal/)
+
 ## Instructions
 
 1. [Create an application](https://developer.paypal.com/dashboard/applications/sandbox/create)

save-payment-method/server/views/checkout.ejs

@@ -9,7 +9,7 @@
     <div id="paypal-button-container"></div>
     <p id="result-message"></p>
     <script
-      src="https://www.paypal.com/sdk/js?client-id=<%= clientId %>"
+      src="https://www.paypal.com/sdk/js?client-id=<%= clientId %>&vault=true"
       data-user-id-token="<%= userIdToken %>"
     ></script>
     <script src="app.js"></script>