correct version number in master branch
SinkManager.shutdown() as @PreDestroy

TestSinkManager is using LifecycleManager
Merge pull request #46 from metacret/ISSUE-43

SinkManager.shutdown() as @PreDestroy
Update kafka to kafka_2.8.2-0.8.1

- kafka version upgrade
- removed scala compilation dependency from suro-kafka
- changed customized KafkaProducer to kafka javaapi producer
- unit test re-written by java
Merge pull request #47 from metacret/ISSUE-44

Update kafka to kafka_2.8.2-0.8.1