Add deprecation notice to README
MODIFY
readme.md
readme.md
# Laravel Administrator
+## Project Abandoned
+WARNING: This project is no longer being maintained.
+
Administrator is an administrative interface builder for [Laravel](http://laravel.com). With Administrator you can visually manage your Eloquent models and their relations, and also create stand-alone settings pages for storing site data and performing site tasks.
- **Author:** Jan Hartigan

Add deprecation notice to README