title: Build warning Modeling Project with .NET 4.6 Class
body: <p>Working on a project running Visual Studio 2015 CTP 6. I have a modeling project and a class project.  The class project is targeting .NET 4.6, when I add the class project to the modeling project as a Layer Reference.  I get the following warning message:</p>
  <blockquote>
  <p>------ Build started: Project: Plataforma.Architecture, Configuration: Debug Any CPU ------
  C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(1811,5): warning MSB3274: The primary reference &quot;C:\Projects\Test\bin\Debug\Utilities.dll&quot; could not be resolved because it was built against the &quot;.NETFramework,Version=v4.6&quot; framework. This is a higher version than the currently targeted framework &quot;.NETFramework,Version=v4.5.1&quot;.</p>
  <p>========== Build: 1 succeeded, 0 failed, 1 up-to-date, 0 skipped ==========</p>
  </blockquote>
  <p>How do you upgrade a modeling project to the latest version of the .NET Framework.</p>