upgraded to autofac 3. created nancy only mode for nzbdrone.exe /n

NzbDrone.Common/EnsureThat/Param.cs

@@ -0,0 +1,24 @@
+namespace NzbDrone.Common.EnsureThat
+{
+    public abstract class Param
+    {
+        public const string DefaultName = "";
+
+        public readonly string Name;
+
+        protected Param(string name)
+        {
+            Name = name;
+        }
+    }
+
+    public class Param<T> : Param
+    {
+        public readonly T Value;
+
+        internal Param(string name, T value) : base(name)
+        {
+            Value = value;
+        }
+    }
+}