Feature/kafka guide app

Initial commit of Kafka Ingestion Guide. This is specifically for Kafka Cluster version 0.8.x.
Flow to ingest Kafka Messages (works with Kafka 0.8.x cluster).
\<p>
Requires these runtime arguments:
\<ul>
\<li> kafka.zookeeper (or) kafka.brokers: Kafka Instance to connect\</li> 
\<li>kafka.topic: Kafka Topic to subscribe\</li> 
\</ul>
\</p>