Update README.md

Author: quantizor

README.md

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 The most lightweight, customizable React markdown component.
 
-[![npm version](https://badge.fury.io/js/markdown-to-jsx.svg)](https://badge.fury.io/js/markdown-to-jsx) [![build status](https://api.travis-ci.org/probablyup/markdown-to-jsx.svg)](https://travis-ci.org/probablyup/markdown-to-jsx) [![codecov](https://codecov.io/gh/probablyup/markdown-to-jsx/branch/master/graph/badge.svg)](https://codecov.io/gh/probablyup/markdown-to-jsx) [![downloads](https://img.shields.io/npm/dm/markdown-to-jsx.svg)](https://npm-stat.com/charts.html?package=markdown-to-jsx)
+[![npm version](https://badge.fury.io/js/markdown-to-jsx.svg)](https://badge.fury.io/js/markdown-to-jsx) <a href="https://bundlephobia.com/result?p=markdown-to-jsx" title="markdown-to-jsx latest minified+gzip size"><img src="https://badgen.net/bundlephobia/minzip/markdown-to-jsx" alt="gzip size"></a> [![build status](https://api.travis-ci.org/probablyup/markdown-to-jsx.svg)](https://travis-ci.org/probablyup/markdown-to-jsx) [![codecov](https://codecov.io/gh/probablyup/markdown-to-jsx/branch/master/graph/badge.svg)](https://codecov.io/gh/probablyup/markdown-to-jsx) [![downloads](https://img.shields.io/npm/dm/markdown-to-jsx.svg)](https://npm-stat.com/charts.html?package=markdown-to-jsx)
 [![Backers on Open Collective](https://opencollective.com/markdown-to-jsx/backers/badge.svg)](#backers) [![Sponsors on Open Collective](https://opencollective.com/markdown-to-jsx/sponsors/badge.svg)](#sponsors)
 
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