Update readme

Author: pmatseykanets

README.md

@@ -12,9 +12,10 @@ This package makes it easy to use native PostgreSQL Full Text Search capabilitie
 ## Contents
 
 - [Installation](#installation)
-  - [Scout 4.x](#scout-4x)
-  - [Scout 2.x, 3.x](#scout-2x-3x)
-  - [Scout 1.x](#scout-1x)
+  - [Scout 5](#scout-5)
+  - [Scout 4](#scout-4)
+  - [Scout 2, 3](#scout-2-3)
+  - [Scout 1](#scout-1)
   - [Laravel](#laravel)
   - [Lumen](#lumen)
 - [Configuration](#configuration)
@@ -35,25 +36,30 @@ This package makes it easy to use native PostgreSQL Full Text Search capabilitie
 
 You can install the package via composer:
 
-### Scout 4.x (Laravel 5.4+)
+### Scout 5
 
 ``` bash
 composer require pmatseykanets/laravel-scout-postgres
 ```
 
-### Scout 2.x, 3.x
+### Scout 4
+
+``` bash
+composer require pmatseykanets/laravel-scout-postgres:2.3.0
+```
+
+### Scout 2, 3
 
 ``` bash
 composer require pmatseykanets/laravel-scout-postgres:1.0.0
 ```
 
-### Scout 1.x
+### Scout 1
 
 ``` bash
 composer require pmatseykanets/laravel-scout-postgres:0.2.1
 ```
 
-
 ### Laravel
 
 If you're using Laravel < 5.5 or if you have package auto-discovery turned off you have to manually register the service provider: