Update ASIC-README for bitfury devices.

ASIC-README

@@ -1,10 +1,10 @@
 SUPPORTED DEVICES
 
 Currently supported devices include the Avalon (including BitBurner), the
-Butterfly Labs SC range of devices and the ASICMINER block erupters. No COM
-ports on windows or TTY devices will be used by cgminer as it communicates
-directly with them via USB so it is normal for them to not exist or be
-disconnected when cgminer is running.
+Butterfly Labs SC range of devices, the ASICMINER block erupters and the BPMC
+BF1 (bitfury) USB devices. No COM ports on windows or TTY devices will be used
+by cgminer as it communicates directly with them via USB so it is normal for
+them to not exist or be disconnected when cgminer is running.
 
 
 The BFL devices should come up as one of the following:
@@ -24,7 +24,18 @@ ASICMINER block erupters will come up as AMU.
 
 ASICMINER devices need the --enable-icarus option when compiling cgminer.
 Also note that the AMU is managed by the Icarus driver which is detailed
-in the FPGA-README
+in the FPGA-README. Configuring them uses the same mechanism as outlined
+below for getting started with butterfly labs ASICs.
+
+
+BITFURY devices
+
+Bitfury devices need the --enable-bitfury option when compiling cgminer.
+
+Currently only the BPMC BF1 devices AKA redfury/bluefury are supported and
+come up as BF1. There are no options available for them. Bitfury device are
+also set up as per the butterfly labs ASICs below.
+
 
 
 GETTING STARTED WITH BUTTERFLY LABS ASICS