title: grunt is not recognized
body: <p>I am new to grunt and I'm using:</p>
  
  <ul>
  <li>Node: 6.9.2</li>
  <li>npm: 3.10.9</li>
  <li>OS: Windows 7</li>
  </ul>
  
  <p>When I run the following command to install grunt:</p>
  
  <pre class="lang-none prettyprint-override"><code>npm install -g grunt-cli
  </code></pre>
  
  <p>I get this error message:</p>
  
  <blockquote>
    <p><code>grunt is not recognized as internal or external command.</code></p>
  </blockquote>
  
  <p>Looking forward for any help.</p>
  
  <p>Thanks</p>