docs: use node_js 8 in example travis.yml

Created by: nikolas2

This is the current node LTS release.

Created by: facebook-github-bot

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Created by: nikolas2

Alright, I've submitted the CLA.

added CLA Signed label

Created by: facebook-github-bot

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!

Created by: Timer

Thanks!

added tag: documentation label

Merged by: Timer at 2018-03-05 01:35:19 UTC

closed