title: PHPStorm and WordPress project errors
body: <p>I'm using <code>PHPStorm</code> while develop <code>WordPress</code> plugins (mainly for HTML/CSS/JS).</p>
  
  <p>Each plugin is a separate <code>PHPStorm</code> project since I can have several goodies from using this way.</p>
  
  <p>The issue is when working on a plugin, the <code>WordPress</code> functions like <code>_e</code> are marked as <code>Warnings</code> (yellow color) and the information <code>PHPStorm</code> gives is that</p>
  
  <pre><code>"Undefined function _e"
  </code></pre>
  
  <p>How can I configure <code>PHPStorm</code> that it understand the <code>WordPress</code> functions and do not shows that errors and autocomplete the functions without to have a big project wrapping the <code>WordPress</code> installation?</p>