Upgrade TargetFramework in TestServer from 4.5 to 4.6.1 (#190)

* Addresses aspnet/WebSockets#185

Author: mikeharder

samples/TestServer/App.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <configuration>
     <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
     </startup>
 </configuration>

samples/TestServer/TestServer.csproj

@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TestServer</RootNamespace>
     <AssemblyName>TestServer</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
@@ -55,4 +55,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>