Merge pull request #142 from erikvanoosten/master

Allow cleaner to read properties from hdfs.
Support custom timestamp field name in KafkaAvroMessageDecoder, works like CAMUS_MESSAGE_TIMESTAMP_FIELD in JsonStringMessageDecoder, backward compatible with falling back to default
Unit tests for DateUtils and MessageDecoderHelper classes.
Merge pull request #144 from ehrlichja/master

Unit tests for DateUtils and MessageDecoderHelper classes.
Merge pull request #143 from zhaown/custom-timestamp-field-name

Support custom timestamp field name in KafkaAvroMessageDecoder
Revert "Support custom timestamp field name in KafkaAvroMessageDecoder"
Merge pull request #145 from linkedin/revert-143-custom-timestamp-field-name

Revert "Support custom timestamp field name in KafkaAvroMessageDecoder"