Update README.md

Author: ArturMoczulski

README.md

@@ -16,7 +16,7 @@ For complete usage instructions and configuration reference, see our [Laravel SD
 See our [Releases](https://github.com/rollbar/rollbar-php-laravel/releases) page for a list of all releases, including changes.
 
 ### Laravel 5.5 and below
-Laravel 5.6 now requires PHP >= 7.1. As of `rollbar/rollbar-php-laravel:v3.0.0` master also supports 5.6.
+Laravel 5.6 now requires PHP >= 7.1. As of `rollbar/rollbar-php-laravel:v3.0.0` and up master also supports 5.6.
 
 We still maintain support for Laravel 5.5 and below on branch `laravel-5.5` and releases in the `2.x.x` major.