diff --git a/README.md b/README.md
new file mode 100644
index 0000000..fa20860
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/jlengrand/vanilla-js)
diff --git a/server.js b/server.js
index d82348d..0b68e7e 100644
--- a/server.js
+++ b/server.js
@@ -1,12 +1,6 @@
 const express = require("express");
 const path = require("path");
-const hbs = require("express-handlebars");
-const dotenv = require("dotenv");
 const morgan = require("morgan");
-const { uuid } = require("uuidv4");
-
-const { hmacValidator } = require('@adyen/api-library');
-const { Client, Config, CheckoutAPI } = require("@adyen/api-library");
 
 // init app
 const app = express();
@@ -19,157 +13,11 @@ app.use(express.urlencoded({ extended: true }));
 // Serve client from build folder
 app.use(express.static(path.join(__dirname, "/public")));
 
-// enables environment variables by
-// parsing the .env file and assigning it to process.env
-dotenv.config({
-  path: "./.env",
-});
-
-// Adyen Node.js API library boilerplate (configuration, etc.)
-const config = new Config();
-config.apiKey = process.env.ADYEN_API_KEY;
-const client = new Client({ config });
-client.setEnvironment("TEST");  // change to LIVE for production
-const checkout = new CheckoutAPI(client);
-
-/* ################# API ENDPOINTS ###################### */
-
-// Invoke /sessions endpoint
-app.post("/api/sessions", async (req, res) => {
-
-  try {
-    // unique ref for the transaction
-    const orderRef = uuid();
-    // Allows for gitpod support
-    const localhost = req.get('host');
-    // const isHttps = req.connection.encrypted;
-    const protocol = req.socket.encrypted? 'https' : 'http';
-    // Ideally the data passed here should be computed based on business logic
-    const response = await checkout.sessions({
-      amount: { currency: "EUR", value: 1000 }, // value is 10€ in minor units
-      countryCode: "NL",
-      merchantAccount: process.env.ADYEN_MERCHANT_ACCOUNT, // required
-      reference: orderRef, // required: your Payment Reference
-      returnUrl: `${protocol}://${localhost}/api/handleShopperRedirect?orderRef=${orderRef}` // set redirect URL required for some payment methods
-    });
-
-    res.json(response);
-  } catch (err) {
-    console.error(`Error: ${err.message}, error code: ${err.errorCode}`);
-    res.status(err.statusCode).json(err.message);
-  }
-});
-
-
-
-// Handle all redirects from payment type
-app.all("/api/handleShopperRedirect", async (req, res) => {
-  // Create the payload for submitting payment details
-  const redirect = req.method === "GET" ? req.query : req.body;
-  const details = {};
-  if (redirect.redirectResult) {
-    details.redirectResult = redirect.redirectResult;
-  } else if (redirect.payload) {
-    details.payload = redirect.payload;
-  }
-
-  try {
-    const response = await checkout.paymentsDetails({ details });
-    // Conditionally handle different result codes for the shopper
-    switch (response.resultCode) {
-      case "Authorised":
-        res.redirect("/result/success");
-        break;
-      case "Pending":
-      case "Received":
-        res.redirect("/result/pending");
-        break;
-      case "Refused":
-        res.redirect("/result/failed");
-        break;
-      default:
-        res.redirect("/result/error");
-        break;
-    }
-  } catch (err) {
-    console.error(`Error: ${err.message}, error code: ${err.errorCode}`);
-    res.redirect("/result/error");
-  }
-});
-
-/* ################# end API ENDPOINTS ###################### */
-
-/* ################# CLIENT SIDE ENDPOINTS ###################### */
-
-// Index (select a demo)
 app.get("/", (req, res) => res.render("index"));
 
-// Cart (continue to checkout)
-app.get("/preview", (req, res) =>
-  res.render("preview", {
-    type: req.query.type,
-  })
-);
-
-// Checkout page (make a payment)
-app.get("/checkout", (req, res) =>
-  res.render("checkout", {
-    type: req.query.type,
-    clientKey: process.env.ADYEN_CLIENT_KEY
-  })
-);
-
-// Result page
-app.get("/result/:type", (req, res) =>
-  res.render("result", {
-    type: req.params.type,
-  })
-);
-
-/* ################# end CLIENT SIDE ENDPOINTS ###################### */
-
-/* ################# WEBHOOK ###################### */
-
-app.post("/api/webhooks/notifications", async (req, res) => {
-
-  // YOUR_HMAC_KEY from the Customer Area
-  const hmacKey = process.env.ADYEN_HMAC_KEY;
-  const validator = new hmacValidator()
-  // Notification Request JSON
-  const notificationRequest = req.body;
-  const notificationRequestItems = notificationRequest.notificationItems
-
-  // Handling multiple notificationRequests
-  notificationRequestItems.forEach(function(notificationRequestItem) {
-
-    const notification = notificationRequestItem.NotificationRequestItem
-
-    // Handle the notification
-    if( validator.validateHMAC(notification, hmacKey) ) {
-      // Process the notification based on the eventCode
-        const merchantReference = notification.merchantReference;
-        const eventCode = notification.eventCode;
-        console.log('merchantReference:' + merchantReference + " eventCode:" + eventCode);
-      } else {
-        // invalid hmac: do not send [accepted] response
-        console.log("Invalid HMAC signature: " + notification);
-        res.status(401).send('Invalid HMAC signature');
-    }
-});
-
-  res.send('[accepted]')
-});
-
-
-/* ################# end WEBHOOK ###################### */
-
-/* ################# UTILS ###################### */
-
 function getPort() {
   return process.env.PORT || 9000;
 }
 
-/* ################# end UTILS ###################### */
-
 // Start server
 app.listen(getPort(), () => console.log(`Server started -> http://localhost:${getPort()}`));