AVRO-3464: Print a header and use tabs as separators (#1614)
AVRO-3464: Print a header and use tabs as separators (#1614)

Signed-off-by: Martin Tzvetanov Grigorov <467ed6115092226a07ff6116d483984b94cf27b9@apache.org>
apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro,apache/avro