Update docs.md

docs.md

@@ -1,6 +1,6 @@
 # Table of content
 - [Requirements](#requirements)
-  - Home Assistant general
+  - [Home Assistant general](#home-assistant-general)
   - Port
   - HTTP or HTTPS
   - SSL Certificates
@@ -13,3 +13,16 @@
 # Requirements
 ## Home Assistant general
 To check if you are using right configuration for app, try to access your Home Assistant web interface with the same protocol (http:// or https://), the same domain or IP and port. If it is not loading – the app will not work as well.
+
+To connect to your Home Assistant instance with HA Client you need `http` and `websocket_api` components to be enabled as well as [remote access](https://www.home-assistant.io/docs/configuration/remote/) configured. If you are using `frontend` component (Home Assistant web interface actually) `websocket_api` is enabled by default and `http` component is already configured on your server, but still you need to double check.
+
+In other cases changes should be made to you `configuration.yaml`:
+```yaml
+http:
+  api_password: #some password here
+  base_url: #your domain for Home Assistant instance
+  ssl_certificate: /ssl/fullchain.pem #ssl configuration to access your HA by https
+  ssl_key: /ssl/privkey.pem 
+
+websocket_api:
+```