[SPARK-1981] Add AWS Kinesis streaming support

I know you simplified this, but I would prefer this to be even more simpler. Its better to have small examples which shows one very simple thing. And then people can combine this examples / components. Take a look at 
https://github.com/apache/spark/blob/master/examples/src/main/scala/org/apache/spark/examples/streaming/KafkaWordCount.scala