From d1a6e693fa7076043008b45582439e5b3b749407 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Mon, 22 May 2017 12:53:40 +0200
Subject: [PATCH] Updated Contributing (markdown)

---
 Contributing.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Contributing.md b/Contributing.md
index dee99e6..94644c0 100644
--- a/Contributing.md
+++ b/Contributing.md
@@ -17,6 +17,7 @@ Below is an overview of how to contribute code to the PDF.js project. The basic
 * GitHub account
 * [Node.js](http://nodejs.org/)
 * Gulp (via `npm install -g gulp-cli`)
+* An ES6 compatible browser
 
 If you develop on Windows, read [[Setting up pdf.js Development Environment for Windows]]. For font testing you will need [Python](http://www.python.org/download).