Document how to create more than one node in the cluster.

[benhosmer]

No description provided.

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[benhosmer]

I signed it!

On Tue, Jun 7, 2016 at 12:53 PM, googlebot notifications@github.com wrote:

Thanks for your pull request. It looks like this may be your first
contribution to a Google open source project. Before we can look at your
pull request, you'll need to sign a Contributor License Agreement (CLA).

📝 Please visit https://cla.developers.google.com/
https://cla.developers.google.com/ to sign.

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verify. Thanks.

• If you've already signed a CLA, it's possible we don't have your
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Ben Hosmer

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[googlebot]

CLAs look good, thanks!

[johndmulhausen]

43: ```shell

[kelseyhightower]

I'll fix the nit myself. Merging.