scaffolding for interop_client and little bit of project renaming
diff --git a/src/csharp/MathClient/.gitignore b/src/csharp/MathClient/.gitignore
new file mode 100644
index 0000000..ba077a4
--- /dev/null
+++ b/src/csharp/MathClient/.gitignore
@@ -0,0 +1 @@
+bin
diff --git a/src/csharp/MathClient/MathClient.cs b/src/csharp/MathClient/MathClient.cs
new file mode 100644
index 0000000..45222ab
--- /dev/null
+++ b/src/csharp/MathClient/MathClient.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Runtime.InteropServices;
+using Google.GRPC.Core;
+using System.Threading;
+
+namespace math
+{
+	class MathClient
+    {
+		public static void Main (string[] args)
+		{
+			using (Channel channel = new Channel("127.0.0.1:23456"))
+			{
+				MathGrpc.IMathServiceClient stub = new MathGrpc.MathServiceClientStub(channel);
+				MathExamples.DivExample(stub);
+
+                MathExamples.FibExample(stub);
+
+				MathExamples.SumExample(stub);
+
+				MathExamples.DivManyExample(stub);
+			}
+           
+            GrpcEnvironment.Shutdown();
+		}
+	}
+}
diff --git a/src/csharp/MathClient/MathClient.csproj b/src/csharp/MathClient/MathClient.csproj
new file mode 100644
index 0000000..7421365
--- /dev/null
+++ b/src/csharp/MathClient/MathClient.csproj
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProductVersion>10.0.0</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>GrpcDemo</RootNamespace>
+    <AssemblyName>GrpcDemo</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <Externalconsole>true</Externalconsole>
+    <PlatformTarget>x86</PlatformTarget>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+    <DebugType>full</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <Externalconsole>true</Externalconsole>
+    <PlatformTarget>x86</PlatformTarget>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="MathClient.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <ItemGroup>
+    <ProjectReference Include="..\GrpcApi\GrpcApi.csproj">
+      <Project>{7DC1433E-3225-42C7-B7EA-546D56E27A4B}</Project>
+      <Name>GrpcApi</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\GrpcCore\GrpcCore.csproj">
+      <Project>{CCC4440E-49F7-4790-B0AF-FEABB0837AE7}</Project>
+      <Name>GrpcCore</Name>
+    </ProjectReference>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/src/csharp/MathClient/Properties/AssemblyInfo.cs b/src/csharp/MathClient/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..f521cd6
--- /dev/null
+++ b/src/csharp/MathClient/Properties/AssemblyInfo.cs
@@ -0,0 +1,22 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+// Information about this assembly is defined by the following attributes. 
+// Change them to the values specific to your project.
+[assembly: AssemblyTitle ("MathClient")]
+[assembly: AssemblyDescription ("")]
+[assembly: AssemblyConfiguration ("")]
+[assembly: AssemblyCompany ("")]
+[assembly: AssemblyProduct ("")]
+[assembly: AssemblyCopyright ("jtattermusch")]
+[assembly: AssemblyTrademark ("")]
+[assembly: AssemblyCulture ("")]
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+[assembly: AssemblyVersion ("1.0.*")]
+// The following attributes are used to specify the signing key for the assembly, 
+// if desired. See the Mono documentation for more information about signing.
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]
+