Update README.md

Author: lgor360

README.md

@@ -4,3 +4,5 @@ notes widget but on PyGObject!
 ![pynotes](https://github.com/user-attachments/assets/449bfd3d-0bbf-468a-a492-7fc292d2a7ed)
 
 # how to install
+
+just "git clone" this repository (or download source code from release) to your home directory and install python3-gobject