add nuget info

vsprojects/grpc/grpc.vcxproj.filters

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <ClCompile Include="..\..\src\core\httpcli\format_request.c">
@@ -690,7 +690,6 @@
       <Filter>src\core\transport</Filter>
     </ClInclude>
   </ItemGroup>
-
   <ItemGroup>
     <Filter Include="include">
       <UniqueIdentifier>{968de0a1-346d-b75a-6f19-6a55119b8235}</UniqueIdentifier>
@@ -744,5 +743,7 @@
       <UniqueIdentifier>{0b0f9ab1-efa4-7f03-e446-6fb9b5227e84}</UniqueIdentifier>
     </Filter>
   </ItemGroup>
-</Project>
-
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+</Project>

vsprojects/grpc_unsecure/grpc_unsecure.vcxproj.filters

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <ClCompile Include="..\..\src\core\surface\init_unsecure.c">
@@ -585,7 +585,6 @@
       <Filter>src\core\transport</Filter>
     </ClInclude>
   </ItemGroup>
-
   <ItemGroup>
     <Filter Include="include">
       <UniqueIdentifier>{10076c7e-7c8e-8005-0c81-64454af2cbc8}</UniqueIdentifier>
@@ -630,5 +629,7 @@
       <UniqueIdentifier>{5fcd6206-f774-9ae6-4b85-305d6a723843}</UniqueIdentifier>
     </Filter>
   </ItemGroup>
-</Project>
-
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+</Project>