updated readme.txt

applications/cafe-scripted/scripts/javascript/barista.js

@@ -0,0 +1,13 @@
+importClass(org.springframework.integration.samples.cafe.Drink);
+importClass(java.lang.Thread);
+importClass(java.lang.System);
+ 
+function prepareDrink(orderItem){ 
+	Thread.sleep(timeToPrepare);
+	System.out.println("javascript: preparing "+ orderItem + " for order "+ orderItem.getOrder().getNumber())
+	return new Drink(orderItem.getOrder().getNumber(), orderItem.getDrinkType(), orderItem.isIced(),
+            orderItem.getShots())
+}
+
+prepareDrink(payload);
+