Adding travis badge

README.md

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 # Translate a JSON Object
 ↳ Links: [NPM](https://www.npmjs.com/package/translate-json-object) | [GitHub](https://github.com/KhaledMohamedP/translate-json-object)
 
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/fd5819795ed745d2b793787849b5400d)](https://www.codacy.com/app/khaledmohamedp/translate-json-object?utm_source=github.com&utm_medium=referral&utm_content=KhaledMohamedP/translate-json-object&utm_campaign=Badge_Grade)  [![Version](https://img.shields.io/npm/v/translate-json-object.svg?style=flat-square)](https://www.npmjs.com/package/translate-json-object)  [![License](https://img.shields.io/npm/l/translate-json-object.svg?style=flat-square)](https://www.npmjs.com/package/translate-json-object)  [![Downloads](http://img.shields.io/npm/dm/translate-json-object.svg?style=flat-square)](https://www.npmjs.com/package/translate-json-object)
+[![Build Status](https://travis-ci.org/KhaledMohamedP/translate-json-object.svg?branch=master)](https://travis-ci.org/KhaledMohamedP/translate-json-object)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/fd5819795ed745d2b793787849b5400d)](https://www.codacy.com/app/khaledmohamedp/translate-json-object?utm_source=github.com&utm_medium=referral&utm_content=KhaledMohamedP/translate-json-object&utm_campaign=Badge_Grade)  [![Version](https://img.shields.io/npm/v/translate-json-object.svg?style=flat)](https://www.npmjs.com/package/translate-json-object)  [![License](https://img.shields.io/npm/l/translate-json-object.svg?style=flat)](https://www.npmjs.com/package/translate-json-object)  [![Downloads](http://img.shields.io/npm/dm/translate-json-object.svg?style=flat)](https://www.npmjs.com/package/translate-json-object)
 
 A Node.js module to translate a JSON object from a detectable language to any other language currently via [google translate API](https://cloud.google.com/translate/docs) | [yandex translate](https://tech.yandex.com/translate/)