Revert "Update README.md"

This reverts commit f937e0bc9d.

README.md

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 # ThingsBoard 
 [![Join the chat at https://gitter.im/thingsboard/chat](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/thingsboard/chat?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-[![Build Status](https://travis-ci.org/eykamp/thingsboard.svg?branch=master)](https://travis-ci.org/thingsboard/thingsboard)
+[![Build Status](https://travis-ci.org/thingsboard/thingsboard.svg?branch=master)](https://travis-ci.org/thingsboard/thingsboard)
 
 ThingsBoard is an open-source IoT platform for data collection, processing, visualization, and device management.