Update the README

[soumilk]

Update the [README] (https://github.com/soumilk/Python-GUI/blob/master/README.md) file of the repository. Add more resources and details about the python GUI workings.

[tushargoyal22]

what type of resources to be added?

[soumilk]

@b18030 Mainly learning resources, some good demo projects link might be helpful as well. Working of different components, usage, features

[Yugalbuddy]

Bro you can add turtle concept to make it more efficient.. After that add it to on hacktoberfest..

[soumilk]

yeah, thanks for suggestion @Yugalbuddy, I am just very occupied in other stuff but will definitely try to do it