Merge pull request #108 from creative-commoners/pulls/3.0/cms5-readme

DOC Update README.md for CMS 5

README.md

@@ -3,6 +3,12 @@
 [![CI](https://github.com/silverstripe/silverstripe-restfulserver/actions/workflows/ci.yml/badge.svg)](https://github.com/silverstripe/silverstripe-restfulserver/actions/workflows/ci.yml)
 [![Silverstripe supported module](https://img.shields.io/badge/silverstripe-supported-0071C4.svg)](https://www.silverstripe.org/software/addons/silverstripe-commercially-supported-module-list/)
 
+## Installation
+
+```sh
+composer require silverstripe/restfulserver
+```
+
 ## Overview
 
 This class gives your application a RESTful API.  All you have to do is set the `api_access` configuration option to `true`
@@ -10,12 +16,6 @@ on the appropriate DataObjects.  You will need to ensure that all of your data m
 your model layer (ie, the DataObject classes) and not in your Controllers.  This is the recommended design for SilverStripe
 applications.
 
-## Requirements
-
-* Silverstripe 4.0 or higher
-
-For a Silverstripe 3.x compatible version of this module, please see the [1.0 branch, or 1.x release line](https://github.com/silverstripe/silverstripe-restfulserver/tree/1.0#readme).
-
 ## Configuration
 
 Example DataObject with simple API access, giving full access to all object properties and relations,