README.md in administrate-field-boolean_emoji-0.2.1 vs README.md in administrate-field-boolean_emoji-0.3.0

@@ -3,15 +3,25 @@
 [![Build Status](https://travis-ci.com/zooppa/administrate-field-boolean_emoji.svg?branch=master)](https://travis-ci.com/zooppa/administrate-field-boolean_emoji)
 [![Code Climate](https://codeclimate.com/github/zooppa/administrate-field-boolean_emoji/badges/gpa.svg)](https://codeclimate.com/github/zooppa/administrate-field-boolean_emoji)
 
 A plugin to visually display boolean fields in [Administrate].
 
+---
+
+### IMPORTANT NOTICE
+
+**This gem is not actively maintained anymore**.
+
+If you’re interested in taking over and steward the project moving forward, please get in touch.
+
+---
+
 ## Usage
 
 Add it to your `Gemfile`:
 
 ```ruby
-gem 'administrate-field-boolean_emoji', '~> 0.2.1'
+gem 'administrate-field-boolean_emoji', '~> 0.3.0'
 ```
 
 Run:
 
 ```bash