title: 'Migrations' does not exist in the namespace 'Microsoft.EntityFrameworkCore'
body: <p>I'm doing a ASP.NET Core project.
  I've installed <code>Microsoft.EntityFrameworkCore</code> and <code>Microsoft.EntityFrameworkCore.Tools</code> NuGet packages.</p>
  
  <p>I ran <code>Add-Migration InitialCreate</code> command,
  Which created <code>Migrations</code> folder and <code>20180905180349_InitialCreate.cs</code> file.</p>
  
  <p>But it says </p>
  
  <blockquote>
    <p>The type or namespace name 'Migrations' does not exist in the
    namespace 'Microsoft.EntityFrameworkCore' (are you missing an assembly
    reference?)</p>
  </blockquote>
  
  <p>What is the cause of this error. Do i need to install any other package ?</p>