build status icon was added

README.md

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 # UNA - [Community Management System](https://una.io)
+[![UNA Build Status](http://ci.boonex.com:8080/buildStatus/icon?job=Trident)](http://ci.boonex.com:8080/job/Trident/)
 [![UNA Official Website](https://img.shields.io/badge/website-una.io-blue.svg)](https://una.io)
 [![license](https://img.shields.io/github/license/unaio/una.svg)](https://github.com/unaio/una/blob/master/license.txt)
 [![UNA All Releases](https://img.shields.io/github/downloads/unaio/una/total.svg)](https://github.com/unaio/una)