README.md in i18n_helper-0.0.3 vs README.md in i18n_helper-0.0.4

@@ -2,20 +2,38 @@
 
 [![Dependency Status](https://gemnasium.com/joel/i18n_helper.png)](https://gemnasium.com/joel/i18n_helper)
 
 [![Build Status](https://travis-ci.org/joel/i18n_helper.png?branch=master)](https://travis-ci.org/joel/i18n_helper) (Travis CI)
 
-[![Coverage Status](https://coveralls.io/repos/joel/i18n_helper/badge.png)](https://coveralls.io/r/joel/i18n_helper)
+[![Coverage Status](https://coveralls.io/repos/joel/i18n_helper/badge.png?branch=master)](https://coveralls.io/r/joel/i18n_helper)
 
 [![Gem Version](https://badge.fury.io/rb/i18n_helper.png)](http://badge.fury.io/rb/i18n_helper)
 
 # I18nHelper
 
 This is a really straightforward I18n locales helper. It can you help to change locale web app on the fly.
 
 ![Screenshot](https://f.cloud.github.com/assets/5789/1832468/0ad6491c-73b6-11e3-8f14-3358168ed5ff.png)
 
+# add callbacks
+
+If we need to add or skip some callbacks, often skip authentication you can add a initializer on your mother app
+
+Add `config/initializers/locales.rb`
+
+```
+module LocalesControllerCallbacks
+  extend ActiveSupport::Concern
+
+  included do
+    skip_before_action :authenticate_user!
+  end
+end
+
+LocalesController.send(:include, LocalesControllerCallbacks)
+```
+
 ## Features
 
 The locale of app is recorded on current session.
 
 ## Installation
@@ -54,6 +72,6 @@
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)
 3. Commit your changes (`git commit -am 'Added some feature'`)
 4. Push to the branch (`git push origin my-new-feature`)
-5. Create new Pull Request
\ No newline at end of file
+5. Create new Pull Request