update docs

docs/en/docs/pro/exclusive.md

@@ -54,3 +54,11 @@ You can enable site search by add `SearchProvider` to `admin_app.configure(...)`
 ```python
 await admin_app.configure(providers=[SearchProvider()])
 ```
+
+## Notification
+
+You can use notification by adding `NotificationProvider` to `admin_app.configure(...) implement by websocket.
+
+```python
+await admin_app.configure(providers=[NotificationProvider()])
+```

docs/en/docs/reference/notification.md

@@ -0,0 +1,47 @@
+# Notification (💗 Pro only)
+
+`FastAPI-Admin` provide a notification center implement by websocket.
+
+![](https://github.com/fastapi-admin/fastapi-admin/blob/dev/images/notification.png?raw=true)
+
+## Usage
+
+You should add it to providers to enable it.
+
+```python
+from fastapi import FastAPI
+from fastapi_admin.app import app as admin_app
+from fastapi_admin.providers.notification import NotificationProvider
+
+app = FastAPI()
+
+provider = NotificationProvider()
+
+
+@app.on_event("startup")
+async def startup():
+    await admin_app.configure(
+        providers=[provider]
+    )
+```
+
+There are two ways to send notifications.
+
+One is call `await provider.broadcast()` directly.
+
+```python
+data = {
+    "title": "test",
+    "content": "//avatars.githubusercontent.com/u/13377178?v=4",
+    "image": "https://avatars.githubusercontent.com/u/13377178?v=4"
+}
+await provider.broadcast(data)
+```
+
+If you want to send notifications out of application, another way is use http api.
+
+```python
+import requests
+
+requests.post('http://localhost:8000/admin/notification', json=data)
+```

docs/en/mkdocs.yml

@@ -52,6 +52,7 @@ nav:
       - reference/admin_log.md
       - reference/global_search.md
       - reference/errors.md
+      - reference/notification.md
   - Customization:
       - custom/page.md
       - custom/overwrite.md