style fix

Author: Peter Spiess-Knafl

README.md

@@ -191,6 +191,7 @@ Roadmap for v0.3
 - Documentation for extending libjson-rpc-cpp (implementing more connectors, authentication manager)
 
 Changes in v0.2.1
+---------
 
 - Added support for positional parameters. (see at [example specification](https://github.com/cinemast/libjson-rpc-cpp/blob/master/src/example/spec.json) how to declare them)