README.md in active_zuora-2.2.4 vs README.md in active_zuora-2.2.5

@@ -10,9 +10,12 @@
 Version 1 can be found at https://github.com/sportngin/active_zuora_v1
 
 ## Thread Safety
 2.0.X versions of Active Zuora are not thread safe. They depend on a version of [Savon](https://github.com/savonrb/savon) that is [does not work with threads](https://github.com/savonrb/savon/issues/259).
 
+As of 2.1.0  Active Zuora is now depending on a thread safe version of [Savon](https://github.com/savonrb/savon)
+
+
 ## Configuration
 
 ```ruby
     ActiveZuora.configure(
       :username => '[e-mail]',