README.md in logstash-input-jdbc-3.0.2 vs README.md in logstash-input-jdbc-3.1.0

@@ -93,9 +93,10 @@
 	    jdbc_driver_library => "/path/to/mysql-connector-java-5.1.33-bin.jar"
 	    jdbc_driver_class => "com.mysql.jdbc.Driver"
 	    jdbc_connection_string => "jdbc:mysql://host:port/database"
 	    jdbc_user => "user"
 	    jdbc_password => "password"
+      # or jdbc_password_filepath => "/path/to/my/password_file"
 	    statement => "SELECT ..."
 	    jdbc_paging_enabled => "true"
 	    jdbc_page_size => "50000"
 	  }
 	}