[Share] How To Upgrade Rails 2 Become Rails 3

Hi:

I just want share for every body here how to upgrade your application from rails 2 become rails 3, like i did before. I hope it will be useful for you guys, any question or advice please post here :

http://www.reinhartlab.com/2010/06/how-to-upgrade-to-rails-3-of-your-old.html

Reinhart