i'm new to drupal, and drupal module development.
I'm just trying to develop a very simple custom field for drupal (just for learning purpose), but i cannot have it listed in the Fields menu.
The module code is here: http://pastebin.com/nqpY91QE
The module is correctly installed and recognized by drupal, but when i try to add a field it doesn't appear as an option.
I tried to follow several tutorial, but with no luck. Could you help me undersand what i'm missing???