Create InstanceData.cs

to support Instances within the RegistrationData object
extended to retrieve all attributes

extended object to support all attributes provided from the web service, rustici.registration.getRegistrationDetail
added GetRegistrationDetail

public RegistrationData GetRegistrationDetail(string registrationId) {}
Merge pull request #3 from randaarchitect/master

GetRegistrationDetail / RegistrationData / InstanceData