JQuery on Rails 3.0.11

Steps to replace Prototype with Jquery

1. open Gem File
2. include gem 'jquery-rails'
3. bundle install in your rails app directory
4. bundle show jquery-rails
5. rails generate jquery:install [--ui]

If you get invalid spec error while doing bundle install, you could do one of the following
1. Update ruby gems to the latest version
     a. gem update --system

or

1. Modify the erroneous gem spec reported
    a. Open the file , look for the reported data format error and remove all the time section
          example : 23-10-12 00:00.000000000z   to  23-10-12

That's it !