title: Cakephp shell :Shell class HelloShell could not be found
body: <p>I am a newer to cakephp .I config the cakephp shell as the cakephp
  handbook says,when I run the HelloShell  with the command cake
  Hello ,I got the error information as follows:</p>
  
  <pre><code>Error: Shell class HelloShell could not be found.
  1#G:\htdocs\cakedemo\lib\Cake\Console\ShellDispatcher.php(191):ShellDispatcher&gt;_getShell('hello')
  2#G:\htdocs\cakedemo\lib\Cake\Console\ShellDispatcher.php(69):ShellDispatcher-&gt;dispatch()
  3#G:\htdocs\cakedemo\app\Console\cake.php(33):ShellDispatcher::run(Array)  {main}
  </code></pre>
  
  <p>my cakephp version :</p>
  
  <h2>Welcome to CakePHP v2.2.0-beta Console</h2>
  
  <p>App : Console</p>
  
  <h2>Path: G:\htdocs\cakedemo\app\Console\</h2>
  
  <p>anyone who is helpful can give me a advice,plea.</p>