Update README.md

Author: haejinjo

README.md

@@ -6,8 +6,10 @@
 
 [![GitHub](https://img.shields.io/github/license/oslabs-beta/reactime)](https://github.com/oslabs-beta/reactime) [![Build Status](https://travis-ci.com/oslabs-beta/reactime.svg?branch=master)](https://travis-ci.com/oslabs-beta/reactime) [![npm version](https://badge.fury.io/js/reactime.svg)](http://badge.fury.io/js/reactime) [![Dependencies](https://david-dm.org/oslabs-beta/reactime.svg)](https://david-dm.org/oslabs-beta/reactime#info=dependencies) [![DevDependencies](https://david-dm.org/oslabs-beta/reactime/dev-status.svg)](https://david-dm.org/oslabs-beta/reactime?type=dev) [![Vulnerabilities](https://snyk.io/test/github/oslabs-beta/reactime/badge.svg)](https://snyk.io/test/github/oslabs-beta/reactime)![BabelPresetPrefs](https://img.shields.io/badge/babel%20preset-airbnb-ff69b4)![LintPrefs](https://img.shields.io/badge/linted%20with-eslint-blueviolet)
 
-![demo](./assets/recoil-demo.gif)   
-![demo](./assets/hooks-demo.gif)
+<p align="center">
+<img src="./assets/hooks-demo.gif" />
+<img src="./assets/recoil-demo.gif" />
+</p>
 
 👑   Nominated for the Productivity Booster award at [React Open Source Awards 2020](https://osawards.com/react/)! 👑