fixes for vagrant test and updated travis for go 1.4
Merge pull request #23 from stealthly/go14

fixes for vagrant test and updated travis for go 1.4
consumers and producers stability fix, added deployment timeout
barrier bug fix
barrier bug fix
Merge pull request #25 from stealthly/barrier

barrier bug fix
Reverted producers to master
Merge pull request #24 from stealthly/deployment-timeout

consumers and producers stability fix, added deployment timeout
Message buffer flush fix
Merge pull request #26 from stealthly/flush-fix

Message buffer flush fix
added sequential processing for workers
Merge pull request #27 from stealthly/sequential

Added sequential processing for workers
Merge branch 'master' of https://github.com/stealthly/go_kafka_client into mirrormaker