New Google Cloud Platform icon for docs site

[ryanseys]

I noticed your site is still using the old Google logo in the header. Below I have attached the new logo to replace it.

[dhermes]

Ohhhh fancy

[stephenplusplus]

I think we need this in higher quality and SVG. Know of any asset stashes?

[stephenplusplus]

This issue was moved to GoogleCloudPlatform/gcloud-common#38