[gnome-bluetooth] Update README for /dev/rfkill code

[Bastien Nocera <hadess src gnome org>]

commit 3d2fb9c86dabc35193228948bcb0e6813412f9d5
Author: Bastien Nocera <hadess hadess net>
Date:   Fri Jul 31 11:09:32 2009 +0100

    Update README for /dev/rfkill code

 README |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/README b/README
index 61aedd0..fd68454 100644
--- a/README
+++ b/README
@@ -22,8 +22,13 @@ Requirements
 - GLib (with GIO), GTK+, GConf, dbus-glib, libhal
 - libunique and libnotify
 - BlueZ 4.36 is absolutely required
+- kernel 2.6.31 (or pre-releases) with the new rfkill
+  sub-system are required for rfkill to work [1]
 - obexd is required for bluetooth-sendto to work
 
+[1]: Note that read/write access to the /dev/rfkill device is
+required and should be provided by the distribution
+
 Copyright
 ---------