README.md in resque_mailer-2.2.0 vs README.md in resque_mailer-2.2.1

@@ -43,9 +43,18 @@
 resque_mailer in a shared environment. You will need to use the new queue
 name when starting your workers.
 
     QUEUE=application_specific_mailer rake environment resque:work
 
+Custom handling of errors that arise when sending a message is possible by 
+assigning a lambda to the `error_hander` attribute.
+
+```ruby
+Resque::Mailer.error_handler = lambda { |mailer, message, error|
+  # some custom error handling code here in which you optionally re-raise the error
+}
+```
+
 ### Using with Resque Scheduler
 
 If [resque-scheduler](https://github.com/bvandenbos/resque-scheduler) is
 installed, two extra methods will be available: `deliver_at` and `deliver_in`.
 These will enqueue mail for delivery at a specified time in the future.