added ErrorHandler for printing errors as json
added ErrorHandler for printing errors as json

vidhyaarvind/kafka-mesos,vidhyaarvind/kafka-mesos,tc-dc/kafka-mesos,sujeetv/kafka,Banno/kafka,advertine/kafka,smorin/kafka,sujeetv/kafka,advertine/kafka,tc-dc/kafka-mesos,tc-dc/kafka-mesos,smorin/kafka,Banno/kafka,yonglehou/kafka-1,yonglehou/kafka-1