Remove `scripts.postinstall` on npm publishing. (#473)
Remove `scripts.postinstall` on npm publishing. (#473)

* Works around https://github.com/FormidableLabs/builder/issues/35 for the victory repos.

> This PR has been automatically opened by your friendly [`multibot`](https://github.com/FormidableLabs/multibot/). The transform code and documentation is available at: https://github.com/FormidableLabs/multibot-examples/tree/master/transforms/victory/postinstall
FormidableLabs/victory-chart,FormidableLabs/victory-chart