Added documentation for public WCF-related types
Slight refactor of names
Added WCF to .nuspec tags
Added Active Directory verification of required/restricted Active Directory roles
Expanded Identity, IRole, and PermissionsProvider to accommodate Active Directory
Added test stubs for AD permissions
Finalized ActiveDirectory implementation for 'member of' group verification
Added Role descendant ActiveDirectoryGroup for ease of use
Fixed manual-only issue with PermissionsProvider
Added WCF client endpoint discovery and easier ways to use WCF access provider
Created separate Linqpad examples
Adjusted contract requirement method name syntax