Update script to work for 64 bit versions of Windows. Add check for correct Python versions.
Update script to work for 64 bit versions of Windows. Add check for correct Python versions.

kensipe/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,mesosphere/dcos-cli,mesosphere/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,Yhgenomics/dcos-cli,dcos/dcos-cli,sis-tools/dcos-cli,Yhgenomics/dcos-cli,genome21/dcos-cli,genome21/dcos-cli,dcos/dcos-cli,dcos/dcos-cli,sis-tools/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,sis-tools/dcos-cli,mesosphere/dcos-cli