Add license

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Remove dependency on HighLine

Degrade gracefully in the absence of HighLine.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Bump version number post-release

Signed-off-by: Wincent Colaiuta <win@wincent.com>