Add no more actively maintened notice

README.md

@@ -2,6 +2,8 @@
 
 [![Gem Version](https://badge.fury.io/rb/video_info.svg)](http://badge.fury.io/rb/video_info) [![Build Status](https://travis-ci.org/thibaudgg/video_info.svg?branch=master)](https://travis-ci.org/thibaudgg/video_info) [![Code Climate](https://codeclimate.com/github/thibaudgg/video_info.svg)](https://codeclimate.com/github/thibaudgg/video_info) [![Coverage Status](https://coveralls.io/repos/thibaudgg/video_info/badge.svg?branch=master)](https://coveralls.io/r/thibaudgg/video_info) [![Reviewed by Hound](https://img.shields.io/badge/Reviewed_by-Hound-8E64B0.svg)](https://houndci.com)
 
+:exclamation: VideoInfo is no more actively maintained, please [contact me](mailto:thibaud@thibaud.gg) if you're interested in helping.
+
 Simple Ruby Gem to get video info from Dailymotion, VK, Vimeo, Wistia and YouTube (with playlist).
 
 Tested against Ruby 2.3.0, 2.2.4, and the latest versions of JRuby & Rubinius.