title: How to enable Reference Search View extension
body: <p>Today in my colleague's vscode I saw that finding references opens in sidebar.</p>
  
  <p>I searched the web and I understood that it's done by <a href="https://marketplace.visualstudio.com/items?itemName=ms-vscode.references-view#overview" rel="nofollow noreferrer">Reference Search View</a>, an extension shipped by vscode but it's not working for me. How can I enable it?</p>
  
  <pre><code>Version: 1.30.2
  Commit: 61122f88f0bf01e2ac16bdb9e1bc4571755f5bd8
  Date: 2019-01-07T22:49:48.319Z
  Electron: 2.0.12
  Chrome: 61.0.3163.100
  Node.js: 8.9.3
  V8: 6.1.534.41
  OS: Linux x64 4.15.0-43-generic
  </code></pre>