adding typesafe repo to streaming resolvers so that akka-zeromq is found
adding checkpoint dir to .gitignore
changing streaming resolver for akka
Merge pull request #517 from Reinvigorate/sm-build-fixes

Build fixes for streaming /w SBT
KafkaInputDStream improvements. Allows more Kafka configurability
fixing memory leak in kafka MessageHandler
removing dependency on ZookeeperConsumerConnector + purging last relic of kafka reliability that never solidified (ie- setOffsets)
keeping JavaStreamingContext in sync with StreamingContext + adding comments for better clarity
Shutdown StandaloneExecutorBackend properly in non-error case by sending a termination message instead of calling process.destroy
fixing autooffset.reset behavior when set to 'largest'
Merge pull request #527 from Reinvigorate/sm-kafka-cleanup

KafkaInputDStream fixes and improvements
fixing Spark Streaming count() so that 0 will be emitted when there is nothing to count
adding spark.streaming.blockInterval property
Surfacing decoders on KafkaInputDStream
Configure Maven to perform releases
Conform to Sonatype's "Central Sync Requirements"
Include scala version in artifactId
Mark kafka:0.7.2-spark as an externally provided dependency
Release v0.7.1
Update development version to 0.7.2-SNAPSHOT