Update readme.md

added screenshot, description and useful links

README.md

@@ -2,7 +2,18 @@
 
 ![License](https://img.shields.io/badge/license-MIT-blue.svg) [![Latest Stable Version](https://img.shields.io/packagist/v/justoverclock/flarum-ext-contactme.svg)](https://packagist.org/packages/justoverclock/flarum-ext-contactme) [![Total Downloads](https://img.shields.io/packagist/dt/justoverclock/flarum-ext-contactme.svg)](https://packagist.org/packages/justoverclock/flarum-ext-contactme)
 
-A [Flarum](http://flarum.org) extension. Add Contact Us Page in sidenav
+A [Flarum](http://flarum.org) extension. Add Contact Us Page in sidenav for registered users only.
+
+Feautures:
+ - Registered users can send an email to administrator through a contact form
+ - Invite guests to register/login before using the extension
+ - Admin can change recipient email through admin panel
+ - Visual confirmation of sending message
+
+Screenshot:
+
+<a href="https://ibb.co/xXhVxTx"><img src="https://i.ibb.co/xXhVxTx/1.png" alt="1" border="0"></a> <a href="https://ibb.co/Dw5S5Pp"><img src="https://i.ibb.co/Dw5S5Pp/2.png" alt="2" border="0"></a> <a href="https://ibb.co/cys7HC5"><img src="https://i.ibb.co/cys7HC5/admin.png" alt="admin" border="0"></a>
+
 
 ### Installation
 
@@ -24,4 +35,4 @@ php flarum cache:clear
 
 - [Packagist](https://packagist.org/packages/justoverclock/flarum-ext-contactme)
 - [GitHub](https://github.com/justoverclock/flarum-ext-contactme)
-- [Discuss](https://discuss.flarum.org/d/PUT_DISCUSS_SLUG_HERE)
+- [Discuss](https://flarum.it)