title: Reference a .NET Core Library in a .NET 4.6 project
body: <p>Maybe I have a miss understanding of what ".NET Core Library" means, but when I try to add a .NET Core Library in a .NET 4.6 Assembly using Visual Studio 2015, I get the error:</p>
  
  <blockquote>
    <p>A reference to '...' could not be added. </p>
  </blockquote>
  
  <p>Did I understand something wrong?</p>
  
  <p>This is what I configured in project.json of the .NET Core assembly</p>
  
  <pre><code>"frameworks": {
     "net451": { },
     "dotnet5.4": {
       "dependencies": {
       "Microsoft.CSharp": "4.0.1-beta-23516",
       "System.Collections": "4.0.11-beta-23516",
       "System.Linq": "4.0.1-beta-23516",
       "System.Runtime": "4.0.21-beta-23516",
       "System.Threading": "4.0.11-beta-23516"
    }
  }
  </code></pre>