Set version to 0.6-incubating-SNAPSHOT and update Readme
Update license header for java, sh and xml files
Rename documentation
prefix all projects in addons and quickstarts with flink-
Change cluster shutdown order to avoid heartbeat exceptions during shutdown on large clusters
Improve error messages for data sinks inside iterations.
Add tests to verify correct placement of pipeline breakers with broadcast variables
[FLINK-1018] Fix cross pipelining/daming info to resolve cross-related streaming deadlocks.