README.md in rails-audit-0.9.0 vs README.md in rails-audit-0.10.0

@@ -24,9 +24,13 @@
 
 Rails support may be disabled. Only pure Ruby audits are then executed:
 
     Rails: false
 
+To improve output to the expense of time concurreny can be disabled:
+
+    Concurrency: false
+
 ### [Brakeman](http://brakemanscanner.org/)
 
 Brakeman is a security scanner for Rails.
 
 ### [bundler-audit](https://github.com/rubysec/bundler-audit)