Upgrade to Node.js v6.9.1 (#63)
Upgrade to Node.js v6.9.1 (#63)

v6.9.1 Changelog: https://github.com/nodejs/node/blob/master/doc/changelogs/CHANGELOG_V6.md#6.9.1
dlorenc/nodejs-docker,dlorenc/nodejs-docker,dlorenc/nodejs-docker,GoogleCloudPlatform/nodejs-docker,GoogleCloudPlatform/nodejs-docker,GoogleCloudPlatform/nodejs-docker