[chore] removing active development section.

Author: diasbruno

Diff for: README.md

@@ -9,18 +9,13 @@ Accessible modal dialog component for React.JS
 
 ## Table of Contents
 
-* [Active Development](#active-development)
 * [Installation](#installation)
 * [Usage](#usage)
 * [Styles](#styles)
 * [Examples](#examples)
 * [Testing](#testing)
 * [Demos](#demos)
 
-## Active Development
-
-`react-modal` repository is now updated. New PRs can target the `master`.
-
 ## Installation
 
 To install the stable version: