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.

Yeah might be a viable option to just remove. Google suggests using a exponential backoff which either we should implement or leave as an exercise for the user. I don't think this suggestion will help much other than potentially resulting in a flood of bad requests to Google.