docs: update readme

README.md

@@ -84,12 +84,15 @@ I recommend using the Homebridge UI to configure the plugin settings, as it give
 The plugin allows full manual speed control from 0% to 100% and everything in between. However, your fan needs to be able to support such speed commands. It is [known](https://github.com/arjenhiemstra/ithowifi/wiki/CO2-sensors#itho-with-built-in-co2--sensor-cve-s-optima-inside) that speed commands send to CVE unit's with a built-in CO2 sensor (like the CVE-S Optima Inside) are overruled by the internal speed control of the fan. This means you can't have fine grained control over your fan speed, and are limited to "low", "medium" and "high" speed settings.
 
 If you have such a device with a built-in CO2 sensor, please add the `device` configuration option to your config.json file and set the `co2Sensor` option to `true`. Or use the Homebridge UI to set that option. The plugin will then automatically map the speed in the Home App to the respective virtual remote commands, which will allow you to control the fan speed in 3 steps. The mapping is as follows:
+
 | Home App speed | Virtual remote command | HomeKit Active state |
 | -------------- | ---------------------- | -------------------- |
-| 0% | low | inactive |
-| 33% | low | active |
-| 67% | medium/auto | active |
-| 100% | high | active |
+| 0%             | low                    | inactive             |
+| 33%            | low                    | active               |
+| 67%            | medium/auto            | active               |
+| 100%           | high                   | active               |
+
+The Home App will automatically "snap" to the nearest speed setting, so you don't have to worry about setting the speed to 33% or 67% exactly.
 
 You can also remove the CO2 sensor from the device itself. Just unplug it from the internal board. This will allow you to use the full manual speed control, but you don't receive any Carbon Dioxide reading from this sensor anymore in the Home App for the Air Quality Sensor. Make sure you have removed the `device` configuration option completely.