Initial Challenge Completed - Anthony Capone

**This Pull Request Adds Support For:**
* Authenticating via [Google OAuth2](https://github.com/zquestz/omniauth-google-oauth2)
* Uploading and persisting a properly [formatted tab delimited ledger](https://github.com/dotnet236/data-engineering/commit/5c46a90d91621d0bf458b889e4d6d6475a41a5f4)
* Calculating totals of both
  * Gross revenue for an individual import
  * Gross revenue for all imports

**Also included:**
* Support for running RSpecs in [travis-ci](https://travis-ci.org/dotnet236/data-engineering)