title: Symfony Bundle Load YML Configuration
body: <p>Since I am new to Symfony and I couldn't manage to find some useful information in google I decided to write to you. 
  I've read about the way of loading custom DI alias information from a dependency injector in your bundle and how to create a Configuration class that will expose the alias structure. However I am to some extend confused how I can create a file, for example <strong>routing.yml</strong>, in my <strong>AcmeBundle/Resources/config/</strong> folder and read the data from it. E.g:</p>
  
  <pre><code>some_alias:
      resource: "@AcmeBundle/Controller/"
      type:     annotation
      prefix:   /
  </code></pre>
  
  <p>I want to make a bundle with routing, independent from the main configuration files in the app folder.</p>