title: How to access a Symfony 2 bundle configuration from outside the bundle?
body: <p><strong>Please</strong>, don't link to <a href="http://symfony.com/doc/master/cookbook/bundles/extension.html">How to expose a Semantic Configuration for a Bundle</a></p>
  
  <p>In fact, I already have a fully working bundle, with many configuration options. The bundle is actually configured at <code>app/config.yml</code>, on its own section. I have already implemented a ConfigurationInterface, with its TreeBuilder, and so on. And I am able to successfully inject the config in the bundle and use it in the bundle code.</p>
  
  <p>Yet, what I want to do is extremely simple, but even though I have a <a href="https://github.com/paggybrasil/PaggyBoletoBundle">fully working bundle</a> published and installable using Composer, I've been playing with Symfony 2 only for a few weeks, and probably the answer is indeed ridiculously simple... but I don't know it!</p>
  
  <p><strong>How can I access the bundle configuration from my app controller?</strong></p>
  
  <p>For example... being this the config at <code>app/config.yml</code> (where "devices" has array prototype):</p>
  
  <pre><code>my_bundle:
      format: standard
      devices:
          main:
              color: yellow
              capacity: 200
  </code></pre>
  
  <p>How can I access these values from the controller of an app using the bundle?</p>