docs: S3 configuration added

README.md

@@ -36,6 +36,24 @@ on LMS
 
 ![Preview H5P content in LMS](https://github.com/edly-io/h5pxblock/blob/master/docs/images/preview_content.png?raw=true)
 
+### Configuring S3 as a Storage Backend
+
+When utilizing AWS S3 to store content, it is essential to configure your settings appropriately. Specifically, you must define the `H5PXBLOCK_STORAGE` setting in your common configuration file, as S3 integration does not support private buckets.
+
+Here is the required configuration:
+
+```python
+H5PXBLOCK_STORAGE = {
+    "storage_class": "storages.backends.s3boto3.S3Boto3Storage",
+    "settings": {
+        "bucket_name": "my-s3-public-bucket",
+        "querystring_auth": False,
+        "custom_domain": "my-s3-public-bucket.s3.eu-central-1.amazonaws.com"
+    },
+}
+```
+
+Please ensure that your bucket is publicly accessible to enable seamless content storage and retrieval via S3.
 
 # Working with translations