README.md in easy_reference_data-0.1.2 vs README.md in easy_reference_data-1.0.0

@@ -21,10 +21,11 @@
 Place references in 'db/reference/'
 
 References will be loaded in ascending order, so if an order is desired, prepend 000, 001, 002... etc to the filename.
 
 Run with:
+
     rake easy:reference_data:refresh
 
 ## Deployment
 
 Add this line to your application's deploy.rb file:
@@ -34,12 +35,19 @@
 ## Example
 
 The below example ensures that there are 3 users existing in the database after running the 'rake reference_data:load'
 
     ### db/reference/000_users.rb
-    Easy::ReferenceData.refresh User, :system_code, 'nigel', name: 'Nigel Ramsay', email: '[e-mail]'
-    Easy::ReferenceData.refresh User, :system_code, 'fred', name: 'Fred Schmitt', email: '[e-mail]'
-    Easy::ReferenceData.refresh User, :system_code, 'bert', name: 'Bert Symthe', email: '[e-mail]'
+    Easy::ReferenceData.update_or_create User, {system_code: 'nigel', name: 'Nigel Ramsay', email: '[e-mail]'}, keys: [:system_code]
+    Easy::ReferenceData.update_or_create User, {system_code: 'fred', name: 'Fred Schmitt', email: '[e-mail]'}, keys: [:system_code]
+    Easy::ReferenceData.update_or_create User, {system_code: 'bert', name: 'Bert Symthe', email: '[e-mail]'}, keys: [:system_code]
+
+Multiple keys can be used to identify records that would otherwise not have a unique attribute
+
+    ### db/reference/000_prices.rb
+    Easy::ReferenceData.update_or_create Price, {product_id: 1, type: "Price::RetailPrice", price: 5}, keys: [:product_id, :type]
+    Easy::ReferenceData.update_or_create Price, {product_id: 1, type: "Price::CostPrice", price: 4}, keys: [:product_id, :type]
+    Easy::ReferenceData.update_or_create Price, {product_id: 2, type: "Price::RetailPrice", price: 5}, keys: [:product_id, :type]
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)