rails 3.1.rc4 -> rails 3.1.rc6

Gemfile

@@ -4,7 +4,7 @@ gem 'rails', '>=3.1.0.rc4'
 gem 'yajl-ruby', :require => 'yajl'
 
 gem 'bson_ext'
-gem 'carrierwave'
+gem 'carrierwave', '0.5.6'
 gem 'ckeditor'
 gem 'devise'
 gem 'mini_magick'
@@ -16,6 +16,16 @@ gem 'mongoid'
 gem 'rake', '>=0.9.2'
 gem 'jquery-rails', '>= 1.0.3'
 
+gem 'sprockets', '2.0.0.beta.13'
+
+# Gems used only for assets and not required
+# in production environments by default.
+group :assets do
+  gem 'sass-rails', "~> 3.1.0.rc"
+  gem 'coffee-rails', "~> 3.1.0.rc"
+  gem 'uglifier'
+end
+
 # To use debugger (ruby-debug for Ruby 1.8.7+, ruby-debug19 for Ruby 1.9.2+)
 # gem 'ruby-debug'
  gem 'ruby-debug19'