fix(client): destroy all units if none specified
Merge pull request #55 from bacongobbler/destroy-all-the-units

fix(client): destroy all units if none specified
feat(start/stop): allow starting or stopping > 1 unit at a time
Merge pull request #53 from mboersma/parallel-start-containers

feat(start/stop): allow starting or stopping > 1 unit at a time
fix(cmd): append "@1" if none supplied to install