Flutter todo challenge

We need to update repo with comments and readme

Name		Name	Last commit message	Last commit date
Latest commit History 6 Commits
android		android
assets/github		assets/github
ios		ios
lib		lib
test		test
web		web
windows		windows
.gitignore		.gitignore
.metadata		.metadata
README.md		README.md
analysis_options.yaml		analysis_options.yaml
pubspec.lock		pubspec.lock
pubspec.yaml		pubspec.yaml

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