generate MathServer.exe instead of Grpc.Examples.MathServer

src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -8,7 +8,7 @@
     <ProjectGuid>{BF62FE08-373A-43D6-9D73-41CAA38B7011}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>Grpc.Examples.MathServer</RootNamespace>
-    <AssemblyName>Grpc.Examples.MathServer</AssemblyName>
+    <AssemblyName>MathServer</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">