added --shell param to docker-machine env command, as after moving to 1.10 client, env is not auto-detected appropriately in all situations
added --shell param to docker-machine env command, as after moving to 1.10 client, env is not auto-detected appropriately in all situations

nickdgriffin/adop-docker-compose,prunella2017/adop-docker-compose,dsingh07/adop-docker-compose,kramos/adop-docker-compose,dsingh07/adop-docker-compose,dsingh07/adop-docker-compose,SachinKSingh28/adop-docker-compose,AccenturePDC/adop-docker-compose,nickdgriffin/adop-docker-compose,AccenturePDC/adop-docker-compose,SachinKSingh28/adop-docker-compose,katrinazvaigzne/adop-docker-compose,kramos/adop-docker-compose,nickdgriffin/adop-docker-compose,kramos/adop-docker-compose,prunella2017/adop-docker-compose,SachinKSingh28/adop-docker-compose,AccenturePDC/adop-docker-compose,prunella2017/adop-docker-compose