Add remote_ip to request log.

All request values now use Rack::Request wrapper methods.
Merge pull request #103 from voxtex/add-ip-to-logger

Add remote_ip to request log.
Adding response helper methods to make api tests easier to parse
moving require to spec_helper
updated CHANGELOG
Merge pull request #106 from darbyfrey/parsed_response

Adding response helper methods to make api tests a little easier