Updated the addon with revamped configuration.

Add support for custom MQTT broker

README.md

@@ -1,10 +1,39 @@
-# Grott - Home Assisstant native MQTT integration
+# Grott - Home Assistant with native MQTT integration
 
 [![Open your Home Assistant instance and show the add add-on repository dialog with a specific repository URL pre-filled.](https://my.home-assistant.io/badges/supervisor_add_addon_repository.svg)](https://my.home-assistant.io/redirect/supervisor_add_addon_repository/?repository_url=https%3A%2F%2Fgithub.com%2Fegguy%2Fgrott-home-assistant-add-on)
 
 An addon to allow running the grott software directly on HA.
 
-This allow to process in local all the data from the growatt shineX key and don't depend on growatt server.
+This allow to process in local all the data from the growatt datalogger and don't depend on growatt server.
+
+This addon allow you to have all the entities automatically created.
+
+## Installation
+
+1. If you don't have an MQTT broker yet; in Home Assistant go to **Settings → Add-ons → Add-on store** and install the **Mosquitto broker** addon.
+1. Go back to the **Add-on store**, click **⋮ → Repositories**, fill in</br>  `https://github.com/egguy/grott-home-assistant-add-on` and click **Add → Close** or click the **Add repository** button below, click **Add → Close** (You might need to enter the **internal IP address** of your Home Assistant instance first).  
+[![Open your Home Assistant instance and show the add add-on repository dialog with a specific repository URL pre-filled.](https://my.home-assistant.io/badges/supervisor_add_addon_repository.svg)](https://my.home-assistant.io/redirect/supervisor_add_addon_repository/?repository_url=https%3A%2F%2Fgithub.com%2Fegguy%2Fgrott-home-assistant-add-on)
+3. The repository includes two add-ons:
+    - **grott** is the stable release that tracks the released versions of grott HA plugin.
+    - **grott Edge** tracks the `dev` branch of grott HA plugin such that you can install the edge version if there are features or fixes in the grott HA dev branch that are not yet released. (**recommended for most users**)
+4. Click on the addon and press **Install** and wait till the addon is installed.
+5. Click on **Configuration**
+    - If you are **not** using the Mosquitto broker addon fill in your MQTT details (leave empty when using the Mosquitto broker addon). Format is e.g.: <br>
+
+        ```yaml
+        host: <IP>
+        port: 1883
+        user: my_user
+        password: my_password
+        ```
+
+    - Click **Save**
+    - **Tip:** it is possible to refer to variables in the Home Assistant `secrets.yaml` file by using e.g. `password: '!secret mqtt_pass'`
+6. If multiple inverters, please refer on how to configure them on this documentation: <https://github.com/johanmeijer/grott/wiki/Multi-Inverter-support>
+7. Start the addon by going to **Info** and click **Start**
+8. Configure your data logger using the information contained here: [Rerouting Growatt Wifi TCPIP data via your Grott Server](https://github.com/johanmeijer/grott/wiki/Rerouting-Growatt-Wifi-TCPIP-data-via-your-Grott-Server)
+    - Use the local IP of your home assistant
+    - Don't use a DNS, the datalogger can't resolve `homeassistant.local`
 
 ## contributors
 
@@ -13,3 +42,4 @@ Thanks for all the contributors:
 - [alelio](https://github.com/alelio)
 - [perico85](https://github.com/perico85)
 - [crazymonster999](https://github.com/crazymonster999) - Alpha tester
+- Zigbee2mqtt for the inspiration