Initial commit
Changed HKRequest and HKResponse's data property from dictionary to id.
Added support for protocol and subdomain to HKRequest.
Added support for multipart/form-data requests.
Renamed HKRequestBase and HKResponseBase to HKRawRequest and HKRawResponse.
Refactoring.
Added headers property to HKResponse.
Renamed HKRequest and HKResponse’s data property to content.
Refactoring.
Added HKHTTP class.
Added HKContentConverter.
Added HKXMLContentConverter.
Added default values for method and protocol properties.
Updated README file.