[Patch] Can't install plug in on Windows

When trying to install a plug in on Windows I've got this error:

c:\projecx\> ruby script/plugin --verbose install http://github.com/rails/rails_xss.git/
Plugin not found: ["http://github.com/rails/rails_xss.git/"]
#<Errno::EACCES: Permission denied - /dev/null>

This really happens because /dev/null doesn't exist on Windows. I fixed it by creating c:\dev\null :) I think it would be great if you don't generate commands that pipe to /dev/null. Maybe not getting the output to the terminal can be solved on Ruby code, or at any rate, in Windows, I'd rather not have the output redirected to /dev/null than have the install fail.

I forgot which line was this in, but it shouldn't be so hard to find: grep -R "> /dev/null"