Allows PSR-0 (classloader) compatible block class to be used (remove ctools dependency).

When defining a block type like this:

<?php


/**
 * Implements hook_bean_types().
 */
function disney_block_bean_types() {
  $plugins = array();

  $plugins['text_display'] = array(
    'label' => t('Text with Display'),
    'description' => t('A block containing text, along with a reference to arbitrary content.'),
    'handler' => array(
      'class' => 'Disney\Block\Type\TextBlock',
      'parent' => 'bean',
    ),
  );

  return $plugins;
}
?>

Bean is unable to load the class while defined and loaded through the class loader module.

It has to follow the ctools convention which is a great blocker for me and to general software good practices development.

Bean should not rely on ctools and provides his own mechanism, thus allowing PSR-0 class to be loaded easily thanks to modules such as classloader (and then being forward compatible with Drupal 8) and deal with the class registry limitation of drupal 7 if people not using classloader (that is declaring classes in .info files).

I'll work on a patch, if not i'll fork this project to removes the evil dependency. :-)