README.md in bootstrap-rails-engine-2.3.2.0 vs README.md in bootstrap-rails-engine-3.0.0.0

- old
+ new

@@ -1,10 +1,14 @@
 # Twitter Bootstrap for Rails 3 & 4
 Make [Twitter Bootstrap](http://twitter.github.com/bootstrap) into Rails Engine. [Bootstrap-datepicker](https://github.com/eternicode/bootstrap-datepicker) is also included.
 
 ## Version
-Bootstrap 2.3.2
-Bootstrap-datepicker 1.1.2
+* Bootstrap 3.0.0rc1
+* Bootstrap-datepicker 1.1.3
+
+### Older Versions
+
+For Bootstrap 2.3.x, try [2.3 branch](https://github.com/yjchen/bootstrap-rails-engine/tree/2.3) or gem version around 2.3.x.x.
 
 ## Rails 3.1 or later
 Include Gemfile,
 
     gem 'bootstrap-rails-engine'