<NME> ProtobufSerializeTest.cs
<BEF> ADDFILE
<MSG> Added protobuf

Added protobuf extension / serializer. Fixed packages.config

<DFF> @@ -0,0 +1,13 @@
+﻿using StackExchange.Redis.Extensions.Protobuf;
+
+namespace StackExchange.Redis.Extensions.Tests
+{
+    public class ProtobufSerializeTest : CacheClientTestBase
+    {
+        public ProtobufSerializeTest()
+            : base(new ProtobufSerializer())
+        {
+
+        }
+    }
+}
\ No newline at end of file

Added protobuf