removed topology ID from bolt and spout case classes
renamed Kafka consumer classes
renamed subscriber references to consumer
relocated method
cleaned up client ID generation
getOffsetsBefore now returns an iteration of offsets
added documentation
changed client ID prefix
relocated and documented method
added utility class for dealing with ByteBuffers
addressing compiler warnings
addressing compiler warnings
addressing compile issue
removing obsolete code
updated method to return an iteration of results
fixed potential null pointer exception