diff --git a/README b/README
index c5f355c1..0497ef08 100644
--- a/README
+++ b/README
@@ -13,13 +13,23 @@ environment, and also gives a backtrace of the exception.
 
 == Usage
 
+INSTALLATION for Rails 3:
 As of Rails 3 ExceptionNotifier is used as a rack middleware
 
+-in your Gemfile:
+gem "exception_notification", "1.0.0 (or later)", :require => "exception_notifier", :git => "git://github.com/sickill/exception_notification.git"
+
+-in your config/environments/development.rb or production.rb
+
   Whatever::Application.config.middleware.use ExceptionNotifier,
     :email_prefix => "[Whatever] ",
     :sender_address => %{"notifier" <notifier@example.com>},
     :exception_recipients => %w{exceptions@example.com}
 
+INSTALLATION For rails 2:
+look here:
+http://github.com/rails/exception_notification/tree/2-3-stable
+
 == Customization
 
 By default, the notification email includes four parts: request, session,