A collection of authentication provider icons for Rails 3.1/Sprockets. Icons are stored in the asset pipeline, so you don't have to copy anything to your app. Created from the original authbuttons by intridea.
Add this to Gemfile:
gem "authbuttons-rails"
Install:
bundle install
Use it:
<%= image_tag("facebook_32.png") %>
You have resolution choices of 32, 64, 128, and 256 pixels.
Enjoy!