Remove Rails 3.2 instructions

README.md

@@ -92,17 +92,7 @@ Please make sure `sprockets-rails` is at least v2.1.4.
 
 #### Rails 3.2.x
 
-Rails 3.2 is [no longer maintained for bugfixes](http://guides.rubyonrails.org/maintenance_policy.html), and you should upgrade as soon as possible.
-
-Starting with bootstrap-sass v3.1.1.1, due to the structural changes from upstream you will need these
-backported asset pipeline gems on Rails 3.2. There is more on why this is necessary in
-https://github.com/twbs/bootstrap-sass/issues/523 and https://github.com/twbs/bootstrap-sass/issues/578.
-
-```ruby
-gem 'sprockets-rails', '=2.0.0.backport1'
-gem 'sprockets', '=2.2.2.backport2'
-gem 'sass-rails', github: 'guilleiguaran/sass-rails', branch: 'backport'
-```
+bootstrap-sass is no longer compatible with Rails 3. The latest version of bootstrap-sass compatible with Rails 3.2 is v3.1.1.0.
 
 ### b. Compass without Rails