Rakefile in bootstrap-sass-rails-2.2.1.1 vs Rakefile in bootstrap-sass-rails-2.2.1.2

@@ -1,7 +1,8 @@
 #!/usr/bin/env rake
 begin
   require 'bundler/setup'
+  require 'appraisal'
 rescue LoadError
   puts 'You must `gem install bundler` and `bundle install` to run rake tasks'
 end
 begin
   require 'rdoc/task'