Merge pull request IQSS#6702 from OdumInstitute/6682_coverage_button

IQSS#6682 add API Test Coverage button to README

README.md

@@ -18,6 +18,7 @@ Dataverse is a trademark of President and Fellows of Harvard College and is regi
 [![Dataverse Project logo](src/main/webapp/resources/images/dataverseproject_logo.jpg?raw=true "Dataverse Project")](http://dataverse.org)
 
 [![API Test Status](https://jenkins.dataverse.org/buildStatus/icon?job=IQSS-dataverse-develop&subject=API%20Test%20Status)](https://jenkins.dataverse.org/job/IQSS-dataverse-develop/)
+[![API Test Coverage](https://img.shields.io/jenkins/coverage/jacoco?jobUrl=https%3A%2F%2Fjenkins.dataverse.org%2Fjob%2FIQSS-dataverse-develop&label=API%20Test%20Coverage)](https://jenkins.dataverse.org/job/IQSS-dataverse-develop/)
 [![Unit Test Status](https://img.shields.io/travis/IQSS/dataverse?label=Unit%20Test%20Status)](https://travis-ci.org/IQSS/dataverse)
 [![Unit Test Coverage](https://img.shields.io/coveralls/github/IQSS/dataverse?label=Unit%20Test%20Coverage)](https://coveralls.io/github/IQSS/dataverse?branch=develop)