Start version 0.0.1.pre.4
whitespace
Move zone_config -> config/zone
Add smartos config with platform_image
vagrant smartos install/list for platform images

Installs SmartOS platform images into ~/.vagrant.d
Add 'smartos' command for interacting with platform images

WIP PlatformImages class does too much. Unclear if logic
should go straight into capability, with a PlatformImage model,
or if PlatformImages can serve as a controller-type thing.