title: Import vendor class in CakePHP 3 without require
body: <p>How do I use an <code>Vendor</code> class without use:</p>
  
  <pre><code>require_once(ROOT . DS . 'vendor' . DS . 'CakePHP-ImageTool-Component' . DS . 'ImageTool.php');
  use ImageTool;
  </code></pre>
  
  <blockquote>
    <p>Note: this class that I want use don't have autoload (not access with composer) and namespace is only a single class.</p>
  </blockquote>
  
  <p>and use the <strong>CakePHP 3</strong> pattern.</p>