Upgrade notes.

README.md

@@ -4,19 +4,21 @@
 [![License](https://poser.pugx.org/boxed-code/laravel-scout-elasticsearch/license)](https://packagist.org/packages/boxed-code/laravel-scout-elasticsearch)
 [![Tests](https://github.com/boxed-code/laravel-scout-elasticsearch/actions/workflows/run_tests.yml/badge.svg)](https://github.com/boxed-code/laravel-scout-elasticsearch/actions/workflows/run_tests.yml)
 
-A basic [elastic](https://www.elastic.co/products/elasticsearch) search backed driver [for Laravel Scout](https://laravel.com/docs/6.0/scout). 
+A basic [elastic](https://www.elastic.co/products/elasticsearch) search backed driver [for Laravel Scout](https://laravel.com/docs/8.0/scout). 
 
 This driver has a simple configuration, requiring you to set the hostname of your elasticsearch node.
 
 Note that this driver uses a separate index for each model type as elasticsearch mapping types have been deprecated in elasticsearch 6.0 and will be removed in 8.0, for more information see https://bit.ly/2TZVZvq.
 
 By default, the driver uses the `simple_query_string` full text parser with `and` as the default operator. More information on the functionality & syntax of this query format can be found [here](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-simple-query-string-query.html).
 
-**Requires Scout ^7.0 or ^8.0, Laravel >=5.4 & PHP >=7.0**. Based on the original work of [ErickTamayo](https://github.com/ErickTamayo/laravel-scout-elastic)
+**Requires Scout ^8.0 or ^9.0 & PHP >=7.2**. Based on the original work of [ErickTamayo](https://github.com/ErickTamayo/laravel-scout-elastic)
+(Scout 5/6/7 & elastic search server 5.x are supported by versions of 1.x)
 
 ## Contents
 
 - [Installation](#installation)
+- [Upgrading from 1.x --> 2.x](#upgrading-from-1x---2x)
 - [Usage](#usage)
 - [Credits](#credits)
 - [License](#license)
@@ -60,6 +62,14 @@ Add the following to your scout configuration:
 ...
 ```
 
+## Upgrading from 1.x -> 2.x
+
+If you are upgrading from 1.x -> 2.x and are using an elastic server version < 7.x you will need to constrain the version of the base elastic driver used in your composer.json. For example if you're running 6.x:
+
+    composer require elasticsearch/elasticsearch:^6.0
+
+** Remember: When you upgrade your server version to 7.x you will need to remove the package or upgrade it to the 7.x driver. **
+
 ## Usage
 
 Now you can use Laravel Scout as described in the [official documentation](https://laravel.com/docs/5.8/scout)