Bump the y18n nodejs dependency to 4.0.1 to fix CVE-2020-7774

[roberthbailey]

Also added some minor updates to the nodejs example README.

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:

/kind breaking

/kind bug

/kind cleanup
/kind documentation
/kind feature
/kind hotfix

What this PR does / Why we need it: Address a security issue in the nodejs SDK.

Which issue(s) this PR fixes:

Closes #

Special notes for your reviewer:

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: markmandel, roberthbailey

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Needs approval from an approver in each of these files:

• examples/nodejs-simple/OWNERS [markmandel,roberthbailey]
• sdks/nodejs/OWNERS [markmandel,roberthbailey]

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[agones-bot]

Build Succeeded 👏

Build Id: d5927fd8-727c-418e-b042-8bb11e9c0def

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:1.14.0-585fccb
• image: gcr.io/agones-images/agones-sdk:1.14.0-585fccb
• image: gcr.io/agones-images/agones-ping:1.14.0-585fccb
• Linux C++ SDK (build): agonessdk-1.14.0-585fccb-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.14.0-585fccb.zip

A preview of the website (the last 30 builds are retained):

• https://585fccb-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2038/head:pr_2038 && git checkout pr_2038
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.14.0-585fccb

[markmandel]

I assume we're waiting on the nod of approval from @steven-supersolid 😄

[roberthbailey]

I assume we're waiting on the nod of approval from @steven-supersolid 😄

That would be ideal.

[steven-supersolid]

I ran npm audit fix and the lines below do not correspond to this version so this part of the config is inconsistent.
If you run the same command it will fix up the file.
Also the version of the sdk is inconsistent with package-lock.json so you'll see an update from 1.10.0-dev to 1.14.0-dev too in this file

[roberthbailey]

Superseded by #2040.