Update README.md

Author: dadul96

README.md

@@ -15,7 +15,9 @@ This library can be installed through the Arduino IDE library manager like so:
 ![](installation.gif)
 
 ### Note
-The Servo-Library was build to be compatible with all the [original Arduino Servo Library](https://github.com/arduino-libraries/Servo) - commands available.
+Starting from version 1.2.0 this Servo-Library is compatible with all the [original Arduino Servo Library](https://github.com/arduino-libraries/Servo) - commands available. Besides that, following functions are added:
+* attach(int pin, int min, int max, int defaultPos);
+* detachAll();
 
 ### Built With
 * [Visual Studio 2019](https://visualstudio.microsoft.com/) - IDE used for programming