update readme w.r.t. tls fingerprinting

Author: banderson84

README.md

@@ -68,6 +68,10 @@ Joy is alpha/beta software; we hope that you use it and benefit
 from it, but do understand that it is not suitable for production
 use.
 
+#### TLS Fingerprinting
+
+We have recently released the largest and most informative open source [TLS fingerprint database](https://github.com/cisco/joy/blob/master/fingerprinting/resources/fingerprint_db.json.gz). Among other features, our approach builds on previous work by being fully automated and annotating TLS fingerprints with significantly more information.  We have built a set of python tools to enable the application of this database, as well as the generation of new databases with the help of Joy. For more information, please see the [TLS fingerprinting documentation](https://github.com/cisco/joy/blob/master/doc/using-joy-fingerprinting-00.pdf).
+
 #### Relation to Cisco ETA
 
 Joy has helped support the research that paved the way for Cisco’s Encrypted