BigQuery

## wip.

### Docs: https://stephenplusplus.github.io/gcloud-node/#/docs/master/bigquery

Carrying on from #262. Just opening this so anyone interested can follow along.

I'm pretty sure most update methods on resources can be PUT or PATCH. There's just a small difference like if you set null, then it will remove the value with PATCH where as if you just don't set it at all, PUT will remove the value. Considering this, we should probably just use PUT :smile: questioning myself now.