symfony amazons3 plugin

this plugin is now on: http://trac.symfony-project.com/wiki/sfAmazonS3Plugin
but you cannot install it if you follow the instruction on the page.

to install it, refer to: http://www.mail-archive.com/symfony-users@googlegroups.com/msg04571.html

or do my way:
create an empty folder on desktop
right click and use svn to checkout

http://svn.symfony-project.com/plugins/sfAmazonS3FSPlugin

and save it as  
plugins/sfAmazonS3FSPlugin