Add support for using a simple type-name (#22)

src-examples/ProxyInterfaceConsumer/Address.cs

@@ -1,4 +1,4 @@
-namespace ProxyInterfaceConsumer
+namespace DifferentNamespace
 {
     public class Address
     {

src-examples/ProxyInterfaceConsumer/IAddress.cs

@@ -1,6 +1,10 @@
-namespace ProxyInterfaceConsumer
+using DifferentNamespace;
+using System;
+using System.Linq;
+
+namespace ProxyInterfaceConsumer
 {
-    // [ProxyInterfaceGenerator.Proxy(typeof(ProxyInterfaceConsumer.Address))]
+    [ProxyInterfaceGenerator.Proxy(typeof(Address))]
     public partial interface IAddress
     {
     }

src-examples/ProxyInterfaceConsumer/Person.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using DifferentNamespace;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 
 namespace ProxyInterfaceConsumer