rails 3.1 updating css issues

I just updated from 3.0.8 to rails 3.1 rc1. However,the css in my site is clearly not being accessed beacuse my site has no design anymore. I though i could fix it by creating an assets folder and placing my stylesheets and js inside the app/assets folder but that hasn't worked.

I also commented this line out in my config/environments/development.rb file

#config.action_view.debug_rjs   开发者_开发百科          = true

and I added this file to my config/application.rb file

    config.assets.enabled = true

Here is what my gemfile looks like:

source 'http://rubygems.org'

gem 'rails', '3.1.0.rc1'

gem 'devise'
gem 'jquery-rails'
gem 'omniauth'
gem 'rails3-generators' 
gem 'rails_admin', :git => 'git://github.com/sferik/rails_admin.git'
gem 'sass-rails'

group :development do
  gem 'sqlite3-ruby'
end

What am I doing wrong?

P.S. my images are also not showing up

Your app/assets directory should look like this:

app/
    assets/
        images/
            pancakes.png
            ...
        javascripts/
            application.js
            ...
        stylesheets/
            application.css
            ...

There is a guide to the new asset pipeline. You might have to fix some paths as well.