Add unmaintained status to the project

Author: Matt Lewis

Diff for: README.md

@@ -2,12 +2,17 @@
 
 > A webpack plugin for bless CSS
 
+[![project unmaintained](https://img.shields.io/badge/project-unmaintained-red.svg)](https://img.shields.io/badge/project-unmaintained-red.svg)
 [![npm version](https://badge.fury.io/js/bless-css-webpack-plugin.svg)](http://badge.fury.io/js/bless-css-webpack-plugin)
 [![Build Status](https://travis-ci.org/mattlewis92/bless-css-webpack-plugin.svg)](https://travis-ci.org/mattlewis92/bless-css-webpack-plugin)
 [![codecov](https://codecov.io/gh/mattlewis92/bless-css-webpack-plugin/branch/master/graph/badge.svg)](https://codecov.io/gh/mattlewis92/bless-css-webpack-plugin)
 [![Dependency Status](https://david-dm.org/mattlewis92/bless-css-webpack-plugin.svg)](https://david-dm.org/mattlewis92/bless-css-webpack-plugin)
 [![devDependency Status](https://david-dm.org/mattlewis92/bless-css-webpack-plugin/dev-status.svg)](https://david-dm.org/mattlewis92/bless-css-webpack-plugin?type=dev)
 
+## ** Notice **
+
+I no longer use this project as we dropped support at work for IE9 and below. If you would like to take ownership of this project please reach out to me on [twitter](https://twitter.com/mattlewis92_) or via my [website](https://mattlewis.me/#contact). Thanks!
+
 ## Installation
 
 Install the plugin with npm: