update system requirements

README.md

@@ -27,9 +27,9 @@ The codes are written in Python 3.7 and tested on Ubuntu 18.04.
 
 You can either install the softwares on your own machine, use a virtual machine image or run a docker image.
 
-1. Please follow the installation guide below if you are using your own machine.
-2. Alternatively, you can use the virtual machine image provide by us, in which all the necessary modules are installed already. You can down the virtual machine image via [this](https://syncandshare.lrz.de/dlpw/fi2BN8NUepqiQzfG3LzWYf4J/Virtual_Machine.zip) link and run it in Virtual Box. The downloading password and default login password are both `commonroad`. 
-3. Also, you can run a docker image provided by Tom Dörr. After installing docker, you can run the image using command
+1. (Works on Ubuntu) Please follow the installation guide below if you are using your own machine. 
+2. (`Recommended` for Ubuntu, Mac OS & Windows) Alternatively, you can use the virtual machine image provide by us, in which all the necessary modules are installed already. You can down the virtual machine image via [this](https://syncandshare.lrz.de/dlpw/fi2BN8NUepqiQzfG3LzWYf4J/Virtual_Machine.zip) link and run it in Virtual Box. The downloading password and default login password are both `commonroad`. 
+3. (Works on Ubuntu, Mac OS with OS X El Capitan 10.11 or later, Windows 10 64-bit: Pro, Enterprise, or Education, Build 15063 or later) Also, you can run a docker image provided by Tom Dörr. After installing docker, you can run the image using command
 
 ```sh
 docker run -it -p 9000:8888 --mount src="$(pwd)",target=/commonroad-search,type=bind tomdoerr/commonroad-search