Install RESTful Authentication via git????

How does one do this. Is it as easy as script/plugin install
the_git_url

I tried this the other night but it just made a directory in my
vendors directory something like restful_authentication.git with
nothing inside. Did I miss something?

Thanks in advance for any help!
Ed

Ed,
I guess it is supposed to be that easy, but I've got rails 2.0.2
which I think doesn't know git.
Here's what I did...fyi you might want to check out the older version
of restful_authentication.

  cd vendor/plugins
  git clone git://github.com/technoweenie/restful-authentication.git

  Maybe there's a syntax to do something like this?
script/plugin install git://github.com/technoweenie/restful-authentication.git
-Dale