diff --git a/README b/README.rdoc
similarity index 93%
rename from README
rename to README.rdoc
index 1fbafbe..e442d32 100644
--- a/README
+++ b/README.rdoc
@@ -46,3 +46,4 @@ http://www.a-k-r.org/ruby-usb/rdoc/
 * USB.org : http://www.usb.org/
 * AC Power Control through USB : http://www.gniibe.org/ac-power-by-usb/ac-power-control.html
 * How To Control USB Missile Launcher on Linux : http://blog.taragana.com/index.php/archive/how-to-control-usb-missile-launcher-on-linux/
+* libusb 1.0 binding for Ruby : http://rubygems.org/gems/libusb