Merge pull request #11 from ghillert/master

Update dependencies (Spring 4.0.0 RC1 and Spring Security 3.2.0.RC2)
Update README.md
Remove the use of queue-suffix for user destinations

See https://jira.springsource.org/browse/SPR-11077
Update config following a rename in the framework
Upgrade to reactor-tcp 1.0 and jetty plugin 9.0.6
Switch back to simple broker by default
Change @SubscribeEvent to @SubscribeMapping

Follows the renaming of the annotation in the Spring Framework.
Update configuration following changes

See commit https://github.com/spring-projects/spring-framework/commit/4de3291dc7bd6f425636b8d7ac7480d110349457
Update configuration to match the latest snapshot
Update packages in websocket java config
Update to the latest Spring Framework snapshot
Revert to simple broker by default