Added TopicClient and updated Topic DTOs and the dependent SearchClient. Updated contributors and readme. Removed ".nuget" folder.
Replicated previous changes to .Net 3.5 client. Updated SearchClient method to the more generic search. Updated parameter names and comments. Created an internal, static, configuration class.
Added shared client configuration class.
Added DTO UML diagram. Added UserSearchResult DTO. Updated SearchEnvelope with Messages and Users.