enable building nuget package
diff --git a/csharp/.gitignore b/csharp/.gitignore
index d7dcef5..91baa54 100644
--- a/csharp/.gitignore
+++ b/csharp/.gitignore
@@ -5,23 +5,10 @@
 src/AddressBook/obj
 src/ProtocolBuffers/bin/
 src/ProtocolBuffers/obj/
-src/ProtocolBuffers/objCF
-src/ProtocolBuffers.Serialization/bin/
-src/ProtocolBuffers.Serialization/obj/
 src/ProtocolBuffers.Test/bin/
 src/ProtocolBuffers.Test/obj/
-src/ProtocolBuffersLite.Test/bin/
-src/ProtocolBuffersLite.Test/obj/
-src/ProtoBench/bin/
-src/ProtoBench/obj/
 src/ProtoDump/bin/
 src/ProtoDump/obj/
-src/ProtoGen/bin/
-src/ProtoGen/obj/
-src/ProtoGen.Test/bin/
-src/ProtoGen.Test/obj/
-src/ProtoMunge/bin/
-src/ProtoMunge/obj/
 mono/bin
 mono/tmp
 mono/protoc
@@ -36,6 +23,7 @@
 #
 *.user
 *.suo
+*.nupkg
 _ReSharper.*
 *.sln.cache
 mono/TestResult.xml