Update README.md

Author: sebastianvarela

README.md

@@ -3,6 +3,7 @@
 [![CocoaPods Compatible](https://img.shields.io/cocoapods/v/DeviceIdentificator.svg)](https://img.shields.io/cocoapods/v/DeviceIdentificator.svg)
 [![Carthage Compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![Platform](https://img.shields.io/cocoapods/p/DeviceIdentificator.svg?style=flat)](http://cocoadocs.org/docsets/DeviceIdentificator)
+[![Build Status](https://travis-ci.org/sebastianvarela/DeviceIdentificator.svg?branch=master)](https://travis-ci.org/sebastianvarela/DeviceIdentificator)
 
 ## Introduction
 UIDevice extension to fetch current device info such commercial name (iPhone X instead of iPhone10,3).