Support for Legislator.by_name & by_state
Merge pull request #25 from seanknox/legislator_by_name_and_by_state

Support for Legislator.by_name & by_state
Create Base class for commonly used methods/config

Base class to handle methods that are used throughout the code_base, 
like parsing responses from the Sunlight::Congress API.
Forgot to add activesupport into the gemspec