safety
Updated the Children() api of etcd to return a "found" flag.

This command improves the results of many commands.
Merge pull request #64 from iansmith/ies_fix_commands_build_stop

fix commands build stop drop status
Merge pull request #67 from rakitzis/debug

Expose commands being run inside the container at debug level.
There can only be one
Merge pull request #71 from nordsieck/return

Fix Flush
Fail early when DOCKER_HOST not set