fixing sample app project reference

Samples/Console/RESTToolkitTestConsoleApp/RESTToolkitTestConsoleApp.csproj

@@ -49,9 +49,7 @@
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="BingMapsRESTToolkit">
-      <HintPath>..\..\..\Source\bin\Release\BingMapsRESTToolkit.csproj</HintPath>
-    </Reference>
+    <ProjectReference Include="..\..\..\Source\BingMapsRESTToolkit.csproj" />
     <Reference Include="System" />
     <Reference Include="System.configuration" />
     <Reference Include="System.Core" />