synchronises assets in a Rails app and Amazon/Rackspace cloud

 After you run assets:precompile your compiled assets will be synchronised
 with your Amazon S3/Cloudfront or Rackspace Cloudfiles.
 .
 Asset Sync is built to run with the new Rails Asset Pipeline feature introduced
 in Rails 3.1. After you run __bundle exec rake assets:precompile__ your assets
 will be synchronised to your cloud account, optionally deleting unused files
 and only uploading the files it needs to.