WebSocket 1.1 Maintenance Release Draft
explicitly mentioned Lambda Expressions in javadoc and added short paragraph to chapter 2.3.1 - Receiving messages
Bill's comments
Updated date and rebuild spec document
OSGi version set to non-final.

+ spec document refresh (to reflect changes to latest license document version). Please ignore date in the spec document.
pom cleanup
1.1-b01

- WebSocket API 1.1 version promoted build
prepare for next development iteration