added kafka reader capability - not yet tested!




git-svn-id: https://svn.apache.org/repos/asf/incubator/streams/trunk@1567419 13f79535-47bb-0310-9956-ffa450edef68
added kafka reader capability - not yet tested!




git-svn-id: https://svn.apache.org/repos/asf/incubator/streams/trunk@1567420 13f79535-47bb-0310-9956-ffa450edef68