README.md in mymoip-0.1.0 vs README.md in mymoip-0.2.0

@@ -25,9 +25,10 @@
 gem 'mymoip'
 ```
 
 **Configuration**
 ```ruby
+MyMoip.environment = "production" # Optional. "sandbox" by default
 MyMoip.token = "your_moip_dev_token"
 MyMoip.key   = "your_moip_dev_key"
 ```
 
 **First request: what and from who**