First complete version of Kafka flowlet
Address documentation review comments
Fixing more doc comments.
Added ZooKeeper dependency to make sure the version is correct
Merge pull request #6 from caskdata/feature/kafka

First complete version of Kafka flowlet
Update version to 0.1.0 for release.
Added Kafka Flow pack information to README
Added name, description and url for deployment to oss.sonotype
Bump version to 0.2.0-SNAPSHOT.