update readme for version 2.1.0

Author: michaeldyrynda

README.md

@@ -1,5 +1,5 @@
 # Laravel Efficient UUIDs
-## v2.0.0
+## v2.1.0
 
 [![Build Status](https://travis-ci.org/michaeldyrynda/laravel-efficient-uuid.svg?branch=master)](https://travis-ci.org/michaeldyrynda/laravel-efficient-uuid)
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/michaeldyrynda/laravel-efficient-uuid/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/michaeldyrynda/laravel-efficient-uuid/?branch=master)
@@ -22,6 +22,8 @@ Using UUIDs in Laravel is made super simple in combination with [laravel-model-u
 
 This package supports Laravel 5.5 as of version 2.0.0.
 
+This package supports Laravel 5.6 as of version 2.1.0.
+
 ## Installation
 
 This package is installed via [Composer](https://getcomposer.org/). To install, run the following command.