README.md in active_shipping-1.7.2 vs README.md in active_shipping-1.7.3

@@ -21,9 +21,10 @@
 * [Canada Post](http://www.canadapost.ca)
 * [New Zealand Post](http://www.nzpost.co.nz)
 * [Shipwire](http://www.shipwire.com)
 * [Stamps](http://www.stamps.com)
 * [Kunaki](http://www.kunaki.com)
+* [Australia Post](http://auspost.com.au/)
 
 ## Installation
 
 ```ruby
 gem install active_shipping