installation info

[Nokhrin]

As a newbie, I've spent some time to understand the installation process. Would you add short explanations to README for better understanding? Something like that:
To install py_inspect:

1. install required packages (pywinauto, PyQt5 - requirements.txt attached)
2. download py_inspect.py using one of next options:
   • by command
     git clone https://github.com/pywinauto/py_inspect
   • as zip archive
     https://github.com/pywinauto/py_inspect/archive/refs/heads/master.zip

Thanks in advance!
Merry Christmas and Happy New Year!

requirements.txt