Added items to api calls

lib/square/connect/api/items.rb

@@ -0,0 +1,22 @@
+require 'square/utils/api'
+#require 'square/connect/model/item'
+
+module Square
+  module Connect
+    module API
+      module Items
+        include Square::Utils::API
+
+        # Provides summary information for all of a merchant's items.
+        #
+        # @see
+        # @note Authentication Required
+        # @raise [Square::Error::Unauthorized] Error raised when supplied user credentials are invalid.
+        # @return [Square::Connect::Items]
+        def items(merchant_id = 'me')
+          object_from_response(Square::Connect::Item, :get, "/#{merchant_id}/items")
+        end
+      end
+    end
+  end
+end