title: Set requirements for custom bundle
body: <p>I try to set requires for my custom bundle. It located in <kbd>src\CpmName\NameOfBundle</kbd>. I want that when I run <code>php composer update</code> for this bundle will installed Guzzle (my bundle is client for some public API).
  I put file <kbd>composer.json</kbd> to <kbd>src\CpmName\NameOfBundle</kbd> but it doesn't work.</p>