Update README with config details
Update README with config details

fly19890211/vagrant-aws,j00p34/vagrant-cloudstack,atsaki/vagrant-cloudstack,bheuvel/vagrant-cloudstack,uber/vagrant-aws,sharabash/vagrant-aws,Jurisdesk/vagrant-aws,mitchellh/vagrant-aws,miguelaferreira/vagrant-cloudstack,KariusDx/vagrant-aws,KariusDx/vagrant-aws,squeedee/vagrant-aws,rcarmo/vagrant-docker,mitchellh/vagrant-aws,NeilW/vagrant-brightbox,Sunnepah/vagrant-aws,dstrctrng/vagrant-vbox,Sunnepah/vagrant-aws,hussainaphroj/vagrant_aws,nicolasbrechet/vagrant-cloudstack,apcera/vagrant-aws,sneal/vagrant-aws,methodfactory/vagrant-aws,andrewpsp/vagrant-aws,andyhunne/vagrant-aws,webdev1001/vagrant-managed-servers,supriyantomaftuh/vagrant-aws,atsaki/vagrant-cloudstack,andyhunne/vagrant-aws,sharabash/vagrant-aws,pcn/vagrant-aws,steveybaby2/vagrant-aws,rtyler/vagrant-aws,yonglehou/vagrant-aws,j00p34/vagrant-cloudstack,apcera/vagrant-aws,MissionCriticalCloud/vagrant-cloudstack,mkubenka/vagrant-aws,dstrctrng/vagrant-shell,MissionCriticalCloud/vagrant-cloudstack,dstrctrng/vagrant-vbox,squeedee/vagrant-aws,uber/vagrant-aws,aaam/vagrant-aws,dstrctrng/vagrant-shell,fly19890211/vagrant-aws,mkubenka/vagrant-aws,andrewpsp/vagrant-aws,methodfactory/vagrant-aws,tknerr/vagrant-managed-servers,nicolasbrechet/vagrant-cloudstack,schubergphilis/vagrant-cloudstack,greenqloud/vagrant-gq,Jurisdesk/vagrant-aws,aaam/vagrant-aws,bheuvel/vagrant-cloudstack,miguelaferreira/vagrant-cloudstack,schubergphilis/vagrant-cloudstack,rtyler/vagrant-aws,dstrctrng/vagrant-vbox,chrisbaldauf/vagrant-managed-servers,sneal/vagrant-aws,yonglehou/vagrant-aws,pcn/vagrant-aws,steveybaby2/vagrant-aws,supriyantomaftuh/vagrant-aws