ci(): Enable gitpod link in the readme.

Author: nisarhassan12

.gitpod.yml

@@ -0,0 +1,2 @@
+tasks:
+  - init: npm install

CONTRIBUTING.md

@@ -40,6 +40,12 @@ starting point.
 
 We are very grateful for your pull requests! This is your chance to improve Fabric for everyone else.
 
+### Online one-click setup for making PRs
+
+Contribute to fabricjs using a fully featured online development environment that will automatically with a single click: clone the repo and install the dependencies.
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/from-referrer/)
+
 ### Pull request guidelines
 
 Here are a few notes you should take into account:

README.md

@@ -4,6 +4,7 @@
 [![Build Status](https://secure.travis-ci.org/fabricjs/fabric.js.svg?branch=master)](http://travis-ci.org/#!/kangax/fabric.js)
 [![Code Climate](https://d3s6mut3hikguw.cloudfront.net/github/kangax/fabric.js/badges/gpa.svg)](https://codeclimate.com/github/kangax/fabric.js)
 [![Coverage Status](https://coveralls.io/repos/fabricjs/fabric.js/badge.png?branch=master)](https://coveralls.io/r/kangax/fabric.js?branch=master)
+[![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/fabricjs/fabric.js) 
 
 <!-- npm, bower, CDNJS versions, downloads -->