initial Kafka 0.8 support
initial Kafka 0.8 support
added unit tests for storehaus-kafka-08 Deprecated KafkaSink from storehaus-kafka
switched to future{...} to prevent deadlocks
Merge remote-tracking branch 'origin/feature/kafka_0.8' into feature/kafka_0.8

Conflicts:
	storehaus-kafka-08/src/main/scala/com/twitter/storehaus/kafka/KafkaAvroSink.scala
	storehaus-kafka-08/src/main/scala/com/twitter/storehaus/kafka/KafkaSink.scala
	storehaus-kafka-08/src/main/scala/com/twitter/storehaus/kafka/KafkaStore.scala
	storehaus-kafka-08/src/test/scala/com/twitter/storehaus/kafka/KafkaContext.scala
incorporated code review feedbacks
fixed broken build
Merge pull request #232 from MansurAshraf/feature/kafka_0.8

initial Kafka 0.8 support