Please update "sys" to "utils"

[gubi]

When execute a node script from my terminal this message appear:

(node:21492) DeprecationWarning: sys is deprecated. Use util instead.

As you can read here, there's no more chances in the future to use sys.
Can you update the repo?

Thanks

[rightisleft]

• 1

[nisaacson]

merged via #22, thanks @mchapman