HomeMatic README for #726 (#780)

* Initial commit of homematic readme.

* Added "about", "features", and "installation."

* Update homematic readme.

* Fix typos in homematic readme.

* ✏️ Tweaks


Co-authored-by: Franck Nijhof <frenck@frenck.nl>

homematic/README.md

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+# Hass.io Core Add-on: HomeMatic
+
+HomeMatic central based on OCCU.
+
+![Supports aarch64 Architecture][aarch64-shield] ![Supports amd64 Architecture][amd64-shield] ![Supports armhf Architecture][armhf-shield] ![Supports armv7 Architecture][armv7-shield] ![Supports i386 Architecture][i386-shield]
+
+## About
+
+This add-on allows you to control your HomeMatic devices so they can be
+integrated into Home Assistant. It is based on the
+[HomeMatic Open Central Control Unit (OCCU) SDK][occu].
+
+Note: Requires a [HM-MOD-RPI-PCB][hm-mod-rpi-pcb] or [HmIP-RFUSB][hmip-rufsb]
+to interface with your devices.
+
+## Features
+
+- Your Raspberry Pi is your HomeMatic control center!
+- WebUI (experimental)
+- Firmware updates
+
+## Installation
+
+The installation of this add-on is straightforward and easy to do.
+
+1. Navigate in your Home Assistant frontend to **Hass.io** -> **Add-on Store**.
+2. Find the "HomeMatic CCU" add-on and click it.
+3. Click on the "INSTALL" button.
+
+## How to use
+
+1. Properly configure the add-on config (see below).
+2. Start the add-on.
+3. Check the add-on log output to see if it started successfully.
+4. Add homematic to your Home Assistant configuration (also see below).
+5. Restart Home Assistant.
+
+## Configuration
+
+Add-on configuration:
+
+```json
+{
+  "rf_enable": true,
+  "rf": [
+    {
+      "type": "CCU2",
+      "device": "/dev/ttyAMA0"
+    }
+  ],
+  "wired_enable": false,
+  "wired": [
+    {
+      "serial": "xy",
+      "key": "abc",
+      "ip": "192.168.0.0"
+    }
+  ],
+  "hmip_enable": false,
+  "hmip": [
+    {
+      "type": "HMIP_CCU2",
+      "device": "/dev/ttyUSB0"
+    }
+  ]
+}
+```
+
+### Option: `rf_enable` (required)
+
+Enable or disable BidCoS-RF.
+
+### Option: `rf`
+
+List of RF devices.
+
+#### Option: `rf.type` (required)
+
+Device type for RFD service. Check your device manual.
+
+#### Option: `rf.device` (required)
+
+Device on the host.
+
+### Option: `wired_enable` (required)
+
+Enable or disable BidCoS-Wired.
+
+### Option: `wired`
+
+List of wired devices.
+
+#### Option: `wired.serial` (required)
+
+Serial number of the device.
+
+#### Option: `wired.key` (required)
+
+Encryption key for the device.
+
+#### Option: `wired.ip` (required)
+
+IP address of LAN gateway.
+
+### Option: `hmip_enable` (required)
+
+Enable or disable hmip.
+
+### Option: `hmip`
+
+List of HMIP devices.
+
+#### Option: `hmip.type` (required)
+
+Device type for HMIP service. Check your device manual.
+
+#### Option: `hmip.device` (required)
+
+Device on the host.
+
+## Home Assistant configuration
+
+Add the following to your Home Assistant configuration to enable
+the integration:
+
+```yaml
+homematic:
+  interfaces:
+    rf:
+      host: core-homematic
+      port: 2001
+    wired:
+      host: core-homematic
+      port: 2000
+    hmip:
+      host: core-homematic
+      port: 2010
+```
+
+## Raspberry Pi3
+
+If you use the HM-MOD-RPI-PCB on a Raspberry Pi 3, you need to add
+the following to the `config.txt` file on the boot partition:
+
+```text
+dtoverlay=pi3-miniuart-bt
+```
+
+## HmIP-RFUSB
+
+HassOS versions 1.11 and later support the HmIP-RFUSB by default and don't need any
+configuration. If you installed Hassio on another distribution of Linux, you need to
+follow the installation guide for the UART USB to setup the UART USB interface on
+your computer.
+
+## Support
+
+Got questions?
+
+You have several options to get them answered:
+
+- The [Home Assistant Discord Chat Server][discord].
+- The Home Assistant [Community Forum][forum].
+- Join the [Reddit subreddit][reddit] in [/r/homeassistant][reddit]
+
+In case you've found an bug, please [open an issue on our GitHub][issue].
+
+[aarch64-shield]: https://img.shields.io/badge/aarch64-yes-green.svg
+[amd64-shield]: https://img.shields.io/badge/amd64-yes-green.svg
+[armhf-shield]: https://img.shields.io/badge/armhf-yes-green.svg
+[armv7-shield]: https://img.shields.io/badge/armv7-yes-green.svg
+[discord]: https://discord.gg/c5DvZ4e
+[forum]: https://community.home-assistant.io
+[i386-shield]: https://img.shields.io/badge/i386-yes-green.svg
+[issue]: https://github.com/home-assistant/hassio-addons/issues
+[reddit]: https://reddit.com/r/homeassistant
+[repository]: https://github.com/hassio-addons/repository
+[screenshot]: https://github.com/home-assistant/hassio-addons/raw/master/configurator/images/screenshot.png
+[occu]: https://github.com/jens-maus/occu/
+[hm-mod-rpi-pcb]: https://www.elv.ch/homematic-funkmodul-fuer-raspberry-pi-bausatz.html
+[hmip-rufsb]: https://www.elv.ch/elv-homematic-ip-rf-usb-stick-hmip-rfusb-fuer-alternative-steuerungsplattformen-arr-bausatz.html