Update README.md (#110)

Author: Julien-Molina

README.md

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+:warning: **react-gojs is no longer under active development**. Now, Northwoods provides an official React integration for GoJS: [https://github.com/NorthwoodsSoftware/gojs-react](https://github.com/NorthwoodsSoftware/gojs-react). I will not add new features to this lib, only bug fixes. The migration to the official library is pretty easy. I migrated my example [here](https://github.com/nicolaserny/gojs-react-example).
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 [![](http://slack.xcomponent.com/badge.svg)](http://slack.xcomponent.com/)
 [![NpmVersion](https://img.shields.io/npm/v/react-gojs.svg)](https://www.npmjs.com/package/react-gojs)
 [![npm](https://img.shields.io/npm/dt/react-gojs.svg)](https://www.npmjs.com/package/react-gojs)
@@ -9,8 +12,6 @@
 
 _react-gojs_ is a [GoJS](https://gojs.net/latest/index.html) React integration.
 
-:warning: **react-gojs is no longer under active development**. Now, Northwoods provides an official React integration for GoJS: [https://github.com/NorthwoodsSoftware/gojs-react](https://github.com/NorthwoodsSoftware/gojs-react). I will not add new features to this lib, only bug fixes. The migration to the official library is pretty easy. I migrated my example [here](https://github.com/nicolaserny/gojs-react-example).
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 ## Install
 
 Install it from npm. It has peer dependencies of react and react-dom, which will have to be installed as well.