Nice work, Chris! 

This pull request addresses lighthouse ticket #1071.

It adds support for Hybi10, Hixie76 and Hixie75 Websocket protocol. It also adds a default FlashPolicyHandler to seamlessly fall back to flash sockets when using https://github.com/gimite/web-socket-js

Kuddos from updated websocket code https://github.com/joewalnes/webbit
And FlashSocket policy: https://github.com/cgbystrom/netty-tools