Update README.md

Author: adipandas

README.md

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 # python-gui-demos
 This repo contains the basic demonstration of python gui
+Programs are based on use of tkinter python module.
+I have tried to show the use of various UI functionalities using tkinter python3.6
+
+This should be helpful for someone who wants to develop the desktop app using python.
+tkinter is amazingly simple and allow various UI designs.
+
+For more details, refer the tkinter documentation https://wiki.python.org/moin/TkInter
+
+Feel free to contact me, if you need any kind of input. I will be happy to discuss.
+I invite anyone interested to contribute.