Follow Log Example.

[hardillb]

As part of mitigation for #689 here is an example of how to use the Log class to follow logs.

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[hardillb]

CLA signed

[brendandburns]

Thanks for the PR! Please add semi-colons to terminate all lines and then I think this is ok to merge.

[brendandburns]

Thanks for the quick turn-around.

(note to self, we should validate that our style/lint checks run on examples also)

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: brendandburns, hardillb

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