Packaging for release 3.0.3

CHANGELOG

@@ -1,3 +1,7 @@
+== Version 3.0.3
+
+* Add a `customers` helper method to the CustomerGroup resource
+
 == Version 3.0.2
 
 * Brevity in require statements

lib/shopify_api/version.rb

@@ -1,3 +1,3 @@
 module ShopifyAPI
-  VERSION = "3.0.2"
+  VERSION = "3.0.3"
 end