scripts(upload_deb_to_bintray.sh): Add usage
scripts(upload_deb_to_bintray.sh): Add usage

soonho-tri/dreal4,dreal/dreal4,dreal/dreal4,soonho-tri/dreal4,soonho-tri/dreal4,soonho-tri/dreal4,dreal/dreal4,dreal/dreal4