Merge pull request #23 from aneilbaboo/master

Fix Falsey return
Merge pull request #26 from aneilbaboo/master

Make InvalidSchemaType exception consistent
Merge pull request #27 from aneilbaboo/master

Handle no datasets reply
Fix formatting for PEP8 compliance
More PEP8 formatting fixes
Parse totalRows to int.

It seems despite the docs[1] for getQueryResults stating that
totalRows returns an "unsigned long", in fact it returns a string.

[1]: https://developers.google.com/bigquery/docs/reference/v2/jobs/getQueryResults
Merge pull request #28 from john2x/master

Parse totalRows to int.