0.5.1

Install/upgrade instructions here. Note that Fig now requires Docker 1.0 or greater.

• If a service has a command defined, fig run [service] with no further arguments will run it.
• The project name now defaults to the directory containing fig.yml, not the current working directory (if they're different)
• volumes_from now works properly with containers as well as services
• Fixed a race condition when recreating containers in fig up

Thanks @ryanbrainard and @d11wtq!