README in ar-simple-idmap-0.1.0 vs README in ar-simple-idmap-0.1.1

@@ -4,13 +4,16 @@
 Adds simple hand controlled identity map for ActiveRecord.
 
 Installing
 ==========
 
-    gem install ar-simple-identity-map
+in Rails 2.3 in config/environment.rb
 
-or
+    config.gem 'ar-simple-idmap', :lib => 'identity_map'
+    
+in Rails 3 in Gemfile
 
+    gem 'ar-simple-idmap', :require => 'identity_map'
 
 Enabling
 ========    
     
 To enable in ApplicationController (it is not enabled by default).