[-] Readme - Add a community section

Author: arnaudbesnier

CHANGELOG.md

@@ -1,6 +1,9 @@
 # Change Log
 
 ## [Unreleased]
+### Changed
+- Readme - Add a community section.
+- Readme - Remove the Licence section as it is already accessible in the Github page header.
 
 ## RELEASE 3.2.0 - 2019-07-22
 ### Added

README.md

@@ -141,6 +141,8 @@ Please ensure that the **tests** are passing before submitting any pull request:
 $ RAILS_ENV=test bundle exec rake --trace db:migrate test
 ```
 
-## Licence
+## Community
 
-[GPL v3](https://github.com/ForestAdmin/forest-rails/blob/master/LICENSE)
+👇 Join our Slack community of +1000 developers
+
+[![Slack Status](http://community.forestadmin.com/badge.svg)](https://community.forestadmin.com)