title: composer autoloader psr-0 namespaces
body: <p>I have create a custom composer package but I am having troubles to set the correct autoload options for it.</p>
  
  <p>All my classes are under <code>MyNamespace/Common</code> namespace. So for example for including my <code>ArrayHelper</code> class I do use <code>Mynamespace/Common/Helper/ArrayHelper</code>.</p>
  
  <p>This is the relevant part of my <code>composer.json</code>:</p>
  
  <pre class="lang-js prettyprint-override"><code>"autoload": {
      "psr-0": { "MyNamespace\\": "" }
  } 
  </code></pre>
  
  <p>I have read this: <a href="http://getcomposer.org/doc/04-schema.md#autoload" rel="nofollow noreferrer">composer.json / autoload</a></p>
  
  <p>Any help?</p>