README.md in carrierwave_ucloud-0.2.1 vs README.md in carrierwave_ucloud-0.2.2

@@ -7,10 +7,10 @@
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'carrierwave_ucloud'
+gem 'carrierwave_ucloud', '0.2.1'
 ```
 
 And then execute:
 
     $ bundle