title: Drupal: add a taxonomy vocabulary field to my custom content type
body: <p>How I can add a taxonomy vocabulary field to my custom content type to my module?</p>
  
  <p>My objective is when I create a new content(of my custom content type, of course) give me the posibility of select the term which I  want to reference  inside the vocabulary</p>
  
  <p>Thanks for all the help you can give me</p>