update route guide to use 0.6.0 release packages
diff --git a/csharp/route_guide/RouteGuideServer/packages.config b/csharp/route_guide/RouteGuideServer/packages.config
index 481390e..5922553 100644
--- a/csharp/route_guide/RouteGuideServer/packages.config
+++ b/csharp/route_guide/RouteGuideServer/packages.config
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.ProtocolBuffers" version="2.4.1.555" targetFramework="net45" />
-  <package id="Grpc" version="0.5.1" targetFramework="net45" />
-  <package id="Grpc.Core" version="0.5.1" targetFramework="net45" />
+  <package id="Grpc" version="0.6.0" targetFramework="net45" />
+  <package id="Grpc.Core" version="0.6.0" targetFramework="net45" />
   <package id="grpc.dependencies.openssl.redist" version="1.0.2.2" targetFramework="net45" />
   <package id="grpc.dependencies.zlib.redist" version="1.2.8.9" targetFramework="net45" />
-  <package id="grpc.native.csharp_ext" version="0.9.1" targetFramework="net45" />
+  <package id="grpc.native.csharp_ext" version="0.10.0" targetFramework="net45" />
   <package id="Ix-Async" version="1.2.3" targetFramework="net45" />
-  <package id="Microsoft.Bcl.Immutable" version="1.0.34" targetFramework="net45" />
+  <package id="System.Collections.Immutable" version="1.1.36" targetFramework="net45" />
 </packages>
\ No newline at end of file