title: How to handle doctrine migrations in bundles
body: <p>I'm developing an application, using Symfony 2.3, which will have to be installed for different customers. We will offer different features so the idea is to have the features/bundles separate from the main app and load the into the project using composer. As we are using Doctrine Migrations to maintain DB changes across versions I'm  unsure on how to go about using them from a bundle. We're using Capifony to deploy the app to the live server.</p>
  
  <p>So my question is... how can I automatize the execution of migrations from composer loaded bundles?</p>