title: Microsoft.EntityFrameworkCore.Design is not installed
body: <p>I am trying to run the command Add-Migration (code first approach) using EntityFramework Core using PM Console. I cannot get past this error:
  <strong>Cannot execute this command because Microsoft.EntityFrameworkCore.Design is not installed. Install the version of that package that matches the installed version of Microsoft.EntityFrameworkCore and try again.</strong>
  This is my project.json file:</p>
  
  <pre><code>    {
    "dependencies": {
      "Microsoft.NETCore.App": "1.1.0",
      "Microsoft.AspNetCore.Mvc": "1.0.1",
      "Microsoft.AspNetCore.Routing": "1.1.0",
      "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
      "Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
      "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
      "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
      "Microsoft.Extensions.Configuration.Json": "1.0.0",
      "Microsoft.Extensions.Logging": "1.1.0",
      "Microsoft.Extensions.Logging.Console": "1.0.0",
      "Microsoft.Extensions.Logging.Debug": "1.0.0",
      "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
      "Microsoft.EntityFrameworkCore": "1.1.0",
      "Microsoft.EntityFrameworkCore.SqlServer": "1.1.0",
      "Microsoft.EntityFrameworkCore.Design": "1.1.0"
    },
    "tools": {
      "Microsoft.EntityFrameworkCore.Tools.DotNet": "1.1.0-preview4-final",
      "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
    },
  
    "frameworks": {
      "netcoreapp1.0": {
        "imports": [
          "dotnet5.6",
          "portable-net45+win8"
        ]
      }
    },
    "runtimes": {
      "win10-x64": {}
    },
  
    "buildOptions": {
      "emitEntryPoint": true,
      "preserveCompilationContext": true
    },
  
    "runtimeOptions": {
      "configProperties": {
        "System.GC.Server": true
      }
    },
  
    "publishOptions": {
      "include": [
        "wwwroot",
        "**/*.cshtml",
        "appsettings.json",
        "web.config"
      ]
    },
  
    "scripts": {
      "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
    }
  }
  </code></pre>
  
  <p>As you can see my dependencies and tools are version 1.1.0.
  These are my references:
  <a href="https://i.stack.imgur.com/rAda2.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/rAda2.jpg" alt="References"></a></p>
  
  <p>Things I have tried:</p>
  
  <ul>
  <li>Close/reopen Visual Studio</li>
  <li>dotnet restore</li>
  <li>My startup file has my connection string registered in ConfigServices</li>
  </ul>
  
  <p>I have everything installed that I supposed to (that I am aware of).
  I have also looked at other posts for this problem on StackOverflow to no avail.</p>
  
  <p>Anyone able to get past this? I appreciate any help. </p>