README.md in economic-rest-0.5.6 vs README.md in economic-rest-0.5.7

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 # Economic::Rest
 
 [![Build Status](https://semaphoreci.com/api/v1/traels-it/economic-rest/branches/master/badge.svg)](https://semaphoreci.com/traels-it/economic-rest)
 
+[![Coverage Status](https://coveralls.io/repos/bitbucket/traels/economic-rest/badge.svg?branch=master)](https://coveralls.io/bitbucket/traels/economic-rest?branch=master)
+
 Ruby wrapper for the e-conomic REST API, that aims at making working with the API bearable.
 E-conomic is a web-based accounting system. For their marketing speak, see http://www.e-conomic.co.uk/about/. More details about their API at http://www.e-conomic.co.uk/integration/integration-partner/'.
 The documentation can be found at https://restdocs.e-conomic.com
 
 