Updated version to 2.2.1

Author: rduran0

contrast-rest-dotnet/Properties/AssemblyInfo.cs

@@ -31,5 +31,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2.2.0.0")]
-[assembly: AssemblyFileVersion("2.2.0.0")]
+[assembly: AssemblyVersion("2.2.1.0")]
+[assembly: AssemblyFileVersion("2.2.1.0")]