lib/momm/storage.rb in momm-0.0.3 vs lib/momm/storage.rb in momm-0.0.4

@@ -52,16 +52,16 @@
     # == parameters
     # data::
     #   An array looks like [{date: Date.now, currency: :CNY, rate: 1.23} ...]
     #
     # == Returns
-    # nil
+    # "OK"
     #
     def update(data)
       data.each do |d|
         set_rate d[:currency], d[:rate], d[:date]
       end
-      nil
+      "OK"
     end
 
     NotImplementedError = Class.new(StandardError)
   end
 end
\ No newline at end of file