Reorganized the project to put the library one folder down.

NSspi/Credentials/ClientCredential.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NSspi.Credentials
+{
+    public class ClientCredential : Credential
+    {
+        public ClientCredential( SecurityPackage package ) : base( package, CredentialType.Client ) { }
+    }
+}