title: Fatal Error: spawn cmd ENOENT -- grunt serve
body: <p>I am trying to start my angular app using <code>grunt serve</code> command 
  but I am getting Fatal error: spawn cmd ENOENT.</p>
  
  <p>I used following commands to generate my Angular App</p>
  
  <pre><code>npm install -g yo grunt-cli bower
  npm install -g generator-angular
  yo angular
  npm install
  bower install
  </code></pre>
  
  <p>then i used <code>grunt serve</code> command to start my app</p>
  
  <p>but its not working.</p>
  
  <p>System Info:
  OS: Windows 7 64 bit
  npm version : 2.11.3<img src="https://i.stack.imgur.com/vyGE9.png" alt="enter image description here"></p>
  
  <p>please help me, I gone through all the grunt documentation but no clue.</p>