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 [![Build Status](https://travis-ci.org/nlohmann/json.png?branch=master)](https://travis-ci.org/nlohmann/json)
 
+[![Coverage Status](https://img.shields.io/coveralls/nlohmann/json.svg)](https://coveralls.io/r/nlohmann/json)
+
 ## Design goals
 
 There are myriads of [JSON](http://json.org) libraries out there, and each may even have its reason to exist. Our class had these design goals: