Fix project reference

Author: xt0rted

ExampleNet45Project/ExampleNet45.csproj

@@ -39,9 +39,6 @@
       <HintPath>..\packages\Newtonsoft.Json.9.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="SendGrid">
-      <HintPath>..\src\SendGrid\bin\Release\net452\SendGrid.dll</HintPath>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml.Linq" />
@@ -59,6 +56,12 @@
     <None Include="App.config" />
     <None Include="packages.config" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\src\SendGrid\SendGrid.csproj">
+      <Project>{377c20e4-2297-488f-933b-fb635c56d8fc}</Project>
+      <Name>SendGrid</Name>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.