Lunchbox CLI Interface!

[martindines]

This update wraps the existing functionality in a nice CLI interface.

Notable changes:

• Instead of simply running 'lunchbox' to execute the script - the user is now required to run lunchbox run
• Running lunchbox self-update will cause Lunchbox to update its self with the latest version found in bigspring/lunchbox
• Various README changes to reflect and document the above change in functionality
• Bumped version to v1.1.0

Note: I got a little trigger happy and already set the 'self-update' repo to bigspring/lunchbox (see https://github.com/martindines/lunchbox/blob/master/lunchbox#L34) So running self-update will not have an effect unless these set of changes are merged in to master.

[juliotaylor]

nice! totally happy for you to write directly for bigspring/lunchbox, these improvements are really good