gulp build error: Libsass bindings not found

[codenameEli]

After setup, running gulp build for the first time gave me this error.

 ❯ gulp build
[22:28:06] Warning: gulp version mismatch:
[22:28:06] Global gulp is 3.9.1
[22:28:06] Local gulp is 3.8.11
[22:28:07] Using gulpfile ~/Vagrant/www/dalbey/htdocs/wp-content/themes/picard/gulpfile.js
[22:28:07] Starting 'styles'...
[22:28:07] 'styles' errored after 43 ms
[22:28:07] Error: `libsass` bindings not found. Try reinstalling `node-sass`?

Node v6.9.4
Mac OS Sierra

[codenameEli]

Should be fixed in this PR
https://github.com/Automattic/Picard/pull/48/files