Feature Request - Add a splash screen and app icon

Describe the feature

The app should have a splash screen and an icon in the app tray so that it looks more user friendly.

Example user stories

As a user,
I would like a splash screen and icon in the app tray,
So that the app feels more trustworthy

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Alternate solutions to the problem

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Feature Request - Add images to README

Describe the feature

Add a readme with screenshots to show off the app!

Example user stories

Given I am someone who has found this repo
When I look at the readme
Then I should see images which show me what the app looks like

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Alternate solutions to the problem

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Feature Request - Redesign UI to more follow material design

Describe the feature

Currently the app doesn't follow material design principles. The UI should follow these so that Android users get a more familiar feeling app.

https://material.io/

Example user stories

As an Android User
I would like material designs
So that I feel familiar with the app when opening it the first time.

If this request is related to a problem, describe the problem

Alternate solutions to the problem

Example implementations of similar features

Additional context