Update README.md

README.md

@@ -4,9 +4,10 @@ picotls
 [![Build Status](https://travis-ci.org/h2o/picotls.svg?branch=master)](https://travis-ci.org/h2o/picotls)
 
 Picotls is a [TLS 1.3 (RFC 8446)](https://tools.ietf.org/html/rfc8446) protocol stack written in C, with the following features:
-* support for two crypto engines
+* support for three crypto engines
   * "OpenSSL" backend using libcrypto for crypto and X.509 operations
   * "minicrypto" backend using [cifra](https://github.com/ctz/cifra) for most crypto and [micro-ecc](https://github.com/kmackay/micro-ecc) for secp256r1
+  * ["fusion" AES-GCM engine, optimized for QUIC and other protocols that use short AEAD blocks](https://github.com/h2o/picotls/pull/310)
 * support for PSK, PSK-DHE resumption using 0-RTT
 * API for dealing directly with TLS handshake messages (essential for QUIC)
 * support for new extensions: Encrypted SNI (wg-draft-02), Certificate Compression (wg-draft-10)