Extended support for various org & user API calls.  Added additional error messages and nil reference checks.
Merge pull request #4 from code42/master

Merge base updates into fork
Updated ruby fork to incorporate merge feedback.
Fixed issue where the error was not getting set properly when the server responded with a 500.
Fixed ServerError missing reference.
Incorporated code review suggestions re. nil-safe methods
Incorporated code review suggestions re. nil-safe methods
Merge pull request #21 from mceyberg/master

User, Org updates to support Cucumber acceptance testing