title: Run plugin's shell in cakephp 2.0
body: <p>I have created a new CakePHP 2.0 app and want to run a plugin's shell.</p>
  
  <pre><code>&lt;?php
  // app\Plugin\Tmaker\Vendors\Shells\TmakerShell.php
  class TmakerShell extends Shell {  
  }
  </code></pre>
  
  <p>However, I can't see it when running <code>Console/cake</code> from the command-line.</p>
  
  <p>Please advise my what I have missed?</p>