title: there is no project.json, global.json ... etc on .NET Core Solution with Visual Studio 2017
body: <p>I make a project by</p>
  
  <pre><code>File -&gt; New -&gt; Project -&gt; Visual C# -&gt; Web -&gt; ASP.NET Core Web Application     
  (.NET Core) -&gt; Empty -&gt; OK
  </code></pre>
  
  <p>But there is no solution and src directory and also no project.json and web.config etc.</p>
  
  <p>I reference a book that uses <code>Visual Studio 2015</code>. The book's example has all files and directories I told. But I don't(I'm using VS 2017 since I can't find .NET Core for VS 2015).</p>
  
  <p>How can I make those files and directories ?? 
  Do I make these by manually? </p>