NODE_ENV shouldn't always be = production

[productiveme]

Hi there,

Love the package and use it everywhere. I sometimes do some checks against NODE_ENV in my code, but when running a meteor project on local with this package, it always reports NODE_ENV=production. Could you add a setting to override that?

[PEM--]

Thanks for the contrib. I've just published it.

By the way, don't forget to star the project if it pleases you 😉

[productiveme]

Nice, thanks!