squash merge nbargnesi/gosh

Squashed commit of the following:

commit a90043602fe8d2481bd6eb0534745283e0a84f17
Author: Nick Bargnesi <nick@den-4.com>
Date:   Fri Aug 29 22:43:46 2014 -0400

    add the go shell; github.com/formwork-io/gosh