Merge pull request #83 from creative-commoners/pulls/3.0/cms5-readme

DOC Update README.md for CMS 5

README.md

@@ -3,22 +3,12 @@
 [![CI](https://github.com/silverstripe/silverstripe-registry/actions/workflows/ci.yml/badge.svg)](https://github.com/silverstripe/silverstripe-registry/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/)
 
-## Requirements
-
- * Silverstripe ^4.0
-
-**Note:** For a Silverstripe 3.x compatible version, please use [the 1.x release line](https://github.com/silverstripe/silverstripe-registry/tree/1.0).
-
 ## Installation
 
-Install with Composer:
-
-```
+```sh
 composer require silverstripe/registry
 ```
 
-When the module is installed, run a `dev/build` in your browser, or from the command line via `vendor/bin/sake dev/build`.
-
 ## Instructions
 
 See [developer documentation](docs/en/index.md) for more setup details.