Added ThroughputQueue and Tests
Fixed javadocs
STREAMS-190 | Changed documentation for throughput
STREAMS-190 | Added license headers
STREAMS-190 | Changed private variable to AtomicLong since it is only accessed through atomic operations
Merge branch 'STREAMS-181' of github.com:rbnks/incubator-streams into throughput_queues
STREAMS-190 | Simplified locks to AtomicLongs and added more implementations and tests
Merge PR#99 from 'rbnks/STREAMS-190'