upgraded jackson to 2.4.1.1
upgraded jackson to 2.4.1.1

ForrestVV/moco,sandyway/moco,ForrestAlfred/moco,ForrestVV/moco,yonglehou/moco,ruiruiguo/moco,jasonchaffee/moco,cgourlay/moco,rickhan2014/moco,ysjian/moco,cgourlay/moco,sandyway/moco,ruiruiguo/moco,zhigang1992/moco,LiuShulong/moco,dreamhead/moco,zhigang1992/moco,ysjian/moco,yonglehou/moco,jasonchaffee/moco,LiuShulong/moco,rickhan2014/moco,ForrestAlfred/moco,dreamhead/moco