Add codacy batch

Author: cinemast

README.md

@@ -5,6 +5,7 @@
 [![Build status](https://ci.appveyor.com/api/projects/status/c6rv869h984m1eo2?svg=true)](https://ci.appveyor.com/project/cinemast/json-rpc-cxx)
 [![CircleCI](https://circleci.com/gh/jsonrpcx/json-rpc-cxx.svg?style=svg)](https://circleci.com/gh/jsonrpcx/json-rpc-cxx)
 [![codecov](https://codecov.io/gh/jsonrpcx/json-rpc-cxx/branch/master/graph/badge.svg)](https://codecov.io/gh/jsonrpcx/json-rpc-cxx)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/16b095ad49964288b524bc0b499c4efb)](https://www.codacy.com/app/cinemast/json-rpc-cxx?utm_source=github.com&utm_medium=referral&utm_content=jsonrpcx/json-rpc-cxx&utm_campaign=Badge_Grade)
 
 ![json-rpc-cxx-icon](doc/icon.png)