I thought node version 4+ is supported

[albacoretuna]

Hello, thanks for the nice library :)
I remember in the ES6 discussions, people mentioned node version 4.9+ for this library. But seems that it actually needs node 6+ because of the spread operators.

Should that be mentioned in Readme? I'm just hoping it saves some time for someone who needs to support node 4.

[RyanZim]

fs-extra v6 dropped Node 4 support since it's EOL: https://github.com/jprichardson/node-fs-extra/blob/master/CHANGELOG.md#600--2018-05-01

[albacoretuna]

Thanks.

Would it help to mention the node version requirement in Readme?

Otherwise please feel free to close this.

[RyanZim]

I personally hate having to remember to update the README; people can look at the .travis.yml and figure it out.

[JPeer264]

@RyanZim what about having specified engines in the package.json? I think that would help more people who are not familiar with a .travis.yml.
https://docs.npmjs.com/files/package.json#engines

[jprichardson]

@JPeer264 great idea. Would you submit a PR?