title: Add Migration gives "Unable to resolve project from ..."
body: <p>Using EF7 on an ASP.NET 5 project I tried to add a migration typing the following on VS Package Manager Console:</p>
  
  <pre><code>dnx ef migrations add InitialDatabaseSetup
  </code></pre>
  
  <p>And I got the error:</p>
  
  <pre><code>Unable to resolve project from C:\Projects\ASPNET5DEMO
  </code></pre>
  
  <p>The project is inside C:\Projects\ASPNET5DEMO\src\aspnet5demo.web</p>
  
  <p>If use Developer Command Prompt to navigate to that path and then run the command then everything works fine ...</p>
  
  <p>Is there a way to use Package Manager Console?</p>