/**
  * Add a post
  *
  * @param (array) $data An associative array of the post data
  * @return (RSCSV_Import_Post_Helper)
  */
 public static function add($data)
 {
     $object = new RSCSV_Import_Post_Helper();
     if ($data['post_type'] == 'attachment') {
         $post_id = $object->addMediaFile($data['media_file'], $data);
     } else {
         $post_id = wp_insert_post($data, true);
     }
     if (is_wp_error($post_id)) {
         $object->addError($post_id->get_error_code(), $post_id->get_error_message());
     } else {
         $object->setPost($post_id);
     }
     return $object;
 }