title: Cannot run program "npm" in directory
body: <p>When i am traversing the to <code>src/main/app/</code> folder structure where i  have the <code>package.JSON</code> &amp; gruntfile, i am able to run <code>npm install</code> and <code>grunt</code> command. But when i am trying to run the <code>mvn jetty:run</code> and a property file in the root folder of the project when POM file is present, it is throwing error that it cannot run <code>npm install</code> in the folder structure <code>src/main/app/</code>.</p>
  
  <p>This is the exact error:</p>
  
  <pre><code>[INFO] ------------------------------------------------------------------------
  [ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exec (n
  pminstall) on project my-abc-web: Command execution failed. Cannot
   run program "npm" (in directory "C:\Users\Achyut_J01\Documents\GitHub\infras\my-abc\my-abc-web\src\main\app"): CreatePro
  cess error=2, The system cannot find the file specified -&gt; [Help 1]
  </code></pre>
  
  <p>It's a Windows Machine.</p>