README.md in trocla-0.2.3 vs README.md in trocla-0.3.0

@@ -166,9 +166,14 @@
 ### pgsql
 
 Password hashes for PostgreSQL servers. Requires the option `username` to be set
 to the username to which the password will be assigned.
 
+### bcrypt
+
+You are able to tune the [cost factor of bcrypt](https://github.com/codahale/bcrypt-ruby#cost-factors) by passing the option `cost`.
+Note: ruby bcrypt does not support a [cost > 31](https://github.com/codahale/bcrypt-ruby/blob/master/lib/bcrypt/password.rb#L45).
+
 ### x509
 
 This format takes a set of additional options. Required are:
 
     subject: A subject for the target certificate. E.g. /C=ZZ/O=Trocla Inc./CN=test/emailAddress=[e-mail]