[Review] Request from 'aduffeck' @ 'SUSE/machinery/review_140804_use_static_ssh_key'

Please review the following changes:
  * 90d9cb3 Get rid of pennyworth dependency in the machinery VMs
  * e6d354e Fix indentation
  * 7183603 Add description of development work flow
  * 1f20cf3 Merge pull request #17 from SUSE/review_140731_renamed_clone_command_to_copy
  * 09ace73 Renamed clone command to copy