📝 Update README

Signed-off-by: Peter Friese <[email protected]>

Merge branch 'develop/stage_5-sign_in_with_apple_migrate_users'

✨ Implement Multiple Window support

Fixes #15

This squashes the following commits:

commit 20c035f
Author: Peter Friese <[email protected]>
Date:   Mon Jun 15 18:21:38 2020 +0200

    ✨ Add Multiple Window support

commit caeefb5
Merge: 00e086a 8a80d67
Author: Peter Friese <[email protected]>
Date:   Mon Jun 15 18:20:03 2020 +0200

    Merge pull request #12 from Jayson-Furr/scene-support

    Update SceneDelegate.swift

commit 8a80d67
Author: Jayson Furr <[email protected]>
Date:   Sun Jun 14 06:30:52 2020 -0500

    Update SceneDelegate.swift

    Set the window EnvironmentKey to the window for the contentView's environment in the SceneDelegate. This is necessary for multiple window support.

Merge branch 'feature/Sign-in-with-Apple'

Merge branch 'feedback/firestore'

Finish line for stage 3

Merge branch 'develop/stage_3-firebase'

🔥 Implement FirebaseTaskRepository

🔥 Implement FirebaseTaskRepository

🐛 Fix some typos