README.md in active_shipping-1.3.0 vs README.md in active_shipping-1.4.0

@@ -14,10 +14,11 @@
 
 ## Supported Shipping Carriers
 
 * [UPS](http://www.ups.com)
 * [USPS](http://www.usps.com)
+* [USPS Returns](http://returns.usps.com)
 * [FedEx](http://www.fedex.com)
 * [Canada Post](http://www.canadapost.ca)
 * [New Zealand Post](http://www.nzpost.co.nz)
 * [Shipwire](http://www.shipwire.com)
 * [Stamps](http://www.stamps.com)
@@ -113,9 +114,13 @@
 To log requests and responses, just set the `logger` on your carrier class to some kind of `Logger` object:
 
     ActiveShipping::USPS.logger = Logger.new($stdout)
 
 (This logging functionality is provided by the [`PostsData` module](https://github.com/Shopify/active_utils/blob/master/lib/active_utils/posts_data.rb) in the `active_utils` dependency.)
+
+To debug API requests and your code you can run `rake console` to start a Pry session with `ActiveShipping` included
+and instances of the various carriers set up with your test credentials.
+Look at the file `test/console.rb` to see the other goodies it provides.
 
 After you've pushed your well-tested changes to your github fork, make a pull request and we'll take it from there! For more information, see CONTRIBUTING.md.
 
 ## Legal Mumbo Jumbo