title: VS code extension "HelloWorld" sample in typescript is not working
body: <p>I'm trying to create VS code extension and followed the steps provided in documentation <a href="https://code.visualstudio.com/docs/extensions/example-hello-world" rel="nofollow noreferrer">here</a></p>
  
  <p>I setup "helloworld" project in typescript but when i press "F5", nothing happening. I saw, typescript files complied to JS but project is not opening new instance of VS code and enable debug mode not enabled on "F5".</p>
  
  <p>Any suggestions ?.</p>
  
  <p>launch.json file</p>
  
  <pre><code>{
  "version": "0.2.0",
  "configurations": [
      {
          "name": "Extension",
          "type": "extensionHost",
          "request": "launch",
          "runtimeExecutable": "${execPath}",
          "args": [
              "--extensionDevelopmentPath=${workspaceFolder}"
          ],
          "outFiles": [
              "${workspaceFolder}/out/**/*.js"
          ],
          "preLaunchTask": "npm: watch"
      },
      {
          "name": "Extension Tests",
          "type": "extensionHost",
          "request": "launch",
          "runtimeExecutable": "${execPath}",
          "args": [
              "--extensionDevelopmentPath=${workspaceFolder}",
              "--extensionTestsPath=${workspaceFolder}/out/test"
          ],
          "outFiles": [
              "${workspaceFolder}/out/test/**/*.js"
          ],
          "preLaunchTask": "npm: watch"
      },
  
  ]
  </code></pre>
  
  <p>}</p>
  
  <p>Steps i followed is same as mentioned in VS code doc</p>
  
  <ol>
  <li>npm install -g yo generator-code </li>
  <li>yo code </li>
  <li>Launch VS Code,</li>
  <li>choose File > Open Folder and pick the folder that you generated. </li>
  <li><p>Press F5 or click on the Debug icon and click Start.</p>
  
  <p>For me step #5 is not working and not doing anything</p></li>
  </ol>