Bump for version 0.3.0

Add BigQuery service

* Improve error messaging when uploading files to Storage
* Add `GCLOUD_PROJECT` and `GCLOUD_KEYFILE` environment variables
* Specify OAuth 2.0 scopes when connecting to services

Bump for version 0.2.0

Merge upstream changes for 0.1.1 release

Update rdoc tasks

We need these changes so we can continue to build documentation for this release.
Fix a couple rubocop warnings to build continues to work.