title: Angular2 - npm install didn't find namespace webdriver
body: <p>After reinitiating an Angular2 project, I've launch the command npm install and got the following error :</p>
  
  <pre><code>node_modules/protractor/built/browser.d.ts(258,37): error TS2503: Cannot find namespace 'webdriver'
  </code></pre>
  
  <p>Anyone knows where it comes from/ how can I fixed it ? </p>
  
  <p>Thanking you,</p>