Fine tune opening paragraph.

README.adoc

@@ -15,8 +15,10 @@
 :source-highlighter: prettify
 :project_id: gs-messaging-stomp-websocket
 
-This guide walks you through the process of creating a "hello world" application that send messages back and forth, between a browser and the server, using 
-http://en.wikipedia.org/wiki/Streaming_Text_Oriented_Messaging_Protocol[STOMP] messaging and Spring. 
+This guide walks you through the process of creating a "hello world" application that sends messages back and forth, between a browser and the server.
+WebSocket is a very thin, lightweight layer above TCP. It makes it very suitable to use "subprotocols" to embed messages. In this
+guide we'll dive in and use http://en.wikipedia.org/wiki/Streaming_Text_Oriented_Messaging_Protocol[STOMP] messaging with Spring
+to create an interactive web application.
 
 == What you'll build