BAEL-509 (#2114)

* BAEL-509: Initial Commit - working but needs a few fixes to REST API, etc.

* Fixed Authentication Failure - added subscription handlers - sufficient for Websocket Authentication/Authorization - still some issues to resolve with subscriptions and REST API

* Final version

* CSRF token controller - cleanup of chat wrapper

spring-security-mvc-socket/README.md

@@ -0,0 +1,2 @@
+### Relevant Articles: 
+- [Intro to Security and WebSockets](http://www.baeldung.com/intro-to-security-and-websockets)