title: yuicompressor and/or uglify-js does not work in PhpStorm
body: <p>I have installed node package manager (npm) on my windows machine and then i ran the command "npm install less -g" and went on setting up the file watcher in PhpStorm for LESS. This worked very good. I also managed to get it to put the .css files in the css folder instead of in the less folder where I have my .less files.
  My next step was to install yuicompressor so I ran the command "npm install yuicompressor -g". And then I set it up in PhpStorm by adding the yuicompressor for CSS, but it only creates empty .min.css files.</p>
  
  <p>In the PhpStorm watcher settings I have set:</p>
  
  <ul>
  <li>Program: "C:\Users\XXX\AppData\Roaming\npm\yuicompressor.cmd"</li>
  <li>And ticked the box "Create output file from stdout"</li>
  </ul>
  
  <p>I want to achieve this:
  .less (project_root/less) -> .css (project_root/css) -> .min.css (project_root/css)</p>
  
  <p>Is there any one else that has had the same problem, I can't seem to find any solution.</p>
  
  <p>Btw, I also tried to install uglify-js, but with the same result, it only creates empy .min.js files.</p>
  
  <p>Some extra info, my environment variables are as follows:</p>
  
  <ul>
  <li>PATH (User) = C:\Users\XXX\AppData\Roaming\npm</li>
  <li>Path (System) = C:\Program Files\nodejs\</li>
  </ul>