title: How to create entity with Symfony2
body: <p>My general question is how to create entities and repositories with symfony2?</p>
  
  <ul>
  <li>How to create entity/repository with a schema.yml with doctrine orm? Where i must save schema.yml file? What are the commands to type in the console?</li>
  <li>I create a class entity without schema.yml what to do after? Command!?</li>
  <li>Where i must save my entity/repository file when entity is general for all the project or specific to a bundle?</li>
  </ul>