upgraded junit to 4.12
upgraded junit to 4.12

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