update docs (#91)

README.md

@@ -98,8 +98,10 @@ $ bin/console dynamic-search:run -v
         - Multi Search Channels
     - Filter (Faceted Search / Aggregation)
         - Create Filter Definition
+- [Backend UI](docs/50_BackendUI.md)
 - API
 
+
 ## Copyright and License
 Copyright: [DACHCOM.DIGITAL](http://dachcom-digital.com)
 For licensing details please visit [LICENSE.md](LICENSE.md)

UPGRADE.md

@@ -1,5 +1,9 @@
 # Upgrade Notes
 
+# 4.0.2
+
+* introduced backend ui event [#91](https://github.com/dachcom-digital/pimcore-dynamic-search/pull/91)
+
 # 4.0.1
 
 * fix resource deletion [#90](https://github.com/dachcom-digital/pimcore-dynamic-search/pull/90)

docs/50_BackendUI.md

@@ -0,0 +1,19 @@
+# Backend UI
+
+It is possible to extend the backend user interface.
+Listen to the event `dynamic_search.event.settings.postBuildLayout`:
+
+```javascript
+document.addEventListener(
+    'dynamic_search.event.settings.postBuildLayout',
+    (event) => {
+        const dsSettings = event.detail.subject;
+
+        dsSettings.panel.add({
+            'xtype': 'button',
+            'text': 'my button'
+            // ...etc
+        });
+    }
+);
+```