Change checkout zone so that Austrlia is the default country selected in checkout.

config/initializers/spree.rb

@@ -1,12 +1,15 @@
 # Configure Spree Preferences
-# 
+#
 # Note: Initializing preferences available within the Admin will overwrite any changes that were made through the user interface when you restart.
 #       If you would like users to be able to update a setting with the Admin it should NOT be set here.
 #
-# In order to initialize a setting do: 
+# In order to initialize a setting do:
 # config.setting_name = 'new value'
 Spree.config do |config|
   # Example:
   # Uncomment to override the default site name.
   # config.site_name = "Spree Demo Site"
+
+  config.shipping_instructions = true
+  config.checkout_zone = 'Australia'
 end