Fix: setup for chat_gui

 Update: docstrings and tkinter root close handler

Fix classifiers

Fix: file name typo

Update setup.py

fix test

fix register_call function

Update setup.py

Signed-off-by: Ahmad Faizal B H <[email protected]>

Merge pull request ahmadfaizalbh#14 from ahmadfaizalbh/development

Update README

Fix issue ahmadfaizalbh#9 AttributeError: 'dict' object has no attrib…

…ute '__dict__'