Added codacy badge

README.md

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-# osync  [![Build Status](https://travis-ci.org/deajan/osync.svg?branch=master)](https://travis-ci.org/deajan/osync) [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause) [![GitHub Release](https://img.shields.io/github/release/deajan/osync.svg?label=Latest)](https://github.com/deajan/osync/releases/latest) [![Percentage of issues still open](http://isitmaintained.com/badge/open/deajan/osync.svg)](http://isitmaintained.com/project/deajan/osync "Percentage of issues still open")
+# osync  [![Build Status](https://travis-ci.org/deajan/osync.svg?branch=master)](https://travis-ci.org/deajan/osync) [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause) [![GitHub Release](https://img.shields.io/github/release/deajan/osync.svg?label=Latest)](https://github.com/deajan/osync/releases/latest) [![Percentage of issues still open](http://isitmaintained.com/badge/open/deajan/osync.svg)](http://isitmaintained.com/project/deajan/osync "Percentage of issues still open") [![Codacy Badge](https://api.codacy.com/project/badge/Grade/651acb2fd64642eb91078ba523b7f887)](https://www.codacy.com/app/ozy/osync?utm_source=github.com&utm_medium=referral&utm_content=deajan/osync&utm_campaign=Badge_Grade)
 
 A two way filesync script running on bash Linux, BSD, Android, MacOSX, Cygwin, MSYS2, Win10 bash  and virtually any system supporting bash).
 File synchronization is bidirectional, and can be run manually, as scheduled task, or triggered on file changes in daemon mode.