Update README.md

README.md

@@ -2,6 +2,27 @@
 
 Easily add scalar metadata to a Symfony entity via the use of a key-value interface.
 
+# Installation
+1. Add this repository to `composer.json`:
+```json
+"repositories": [
+    {
+        "type": "vcs",
+        "url": "ssh://git@git.pcmdev.co.uk:2222/pcm-libraries/pcm-metadata-bundle.git"
+    }
+],
+```
+2. Install the bundle:
+```sh
+composer require pcm/metadata-bundle
+```
+3. If not set already add the following config to `doctrine.yaml` to prevent errors:
+```yaml
+doctrine:
+    orm:
+        enable_native_lazy_objects: true
+```
+
 # Usage
 1. Use the `MetadataTrait` inside an entity:
 ```php