Update usage command line flag output

Merge pull request #32 from Crazybus/box_me_in_real_virtual_life

Add cmdProxy client to allow running commands on the host machine

Merge pull request #27 from Crazybus/under_cover

Add missing tests for the tty and addDocker parameters. Add test to

Merge pull request #23 from Crazybus/i_am_root

Default to root user for all oses. Using a user that doesn't exist

Merge pull request #21 from Crazybus/release_the_kraken

Add automated release builds via travis