Notes update for Laravel 5.6

Author: gauravmak

README.md

@@ -5,10 +5,15 @@ If you can't use *Bugsnag* or *Sentry* for monitoring your **production Laravel
 
 This is a *plug-and-play* Laravel package to send a message to a Slack channel via an [Incoming WebHook](https://api.slack.com/incoming-webhooks) when error/exception occurs in your application.
 
+
+## Important Note
+There is no requirement to use this package with Laravel 5.6 as new features to Logging module can be to send notifications to Slack.
+
+
 ## Requirements
 
 * PHP 7.0+
-* Laravel 5.5+
+* Laravel 5.5
 
 ## Installation