update readme

README.md

@@ -3,13 +3,16 @@ Brainflayer
 
 Brainflayer is a Proof-of-Concept brainwallet cracking tool that uses
 [libsecp256k1](https://github.com/bitcoin/secp256k1) for pubkey generation.
-It was released as part of my DEFCON talk about cracking brainwallets
+It was originally released as part of my DEFCON talk about cracking brainwallets
 ([slides](https://rya.nc/dc23), [video](https://rya.nc/b6), [why](https://rya.nc/defcon-brainwallets.html)).
 
 The name is a reference to [Mind Flayers](https://en.wikipedia.org/wiki/Illithid),
 a race of monsters from the Dungeons & Dragons role-playing game. They eat
 brains, psionically enslave people and look like lovecraftian horrors.
 
+The current release is more than four times faster than the DEFCON release, and
+many features have been added.
+
 Disclaimer
 ----------
 Just because you *can* steal someone's money doesn't mean you *should*.