README.md in metova-logger-0.0.6 vs README.md in metova-logger-0.0.7

@@ -5,10 +5,12 @@
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'metova-logger'
+group :staging, :production do
+  gem 'metova-logger'
+end
 ```
 
 And then execute:
 
     $ bundle