Update README.md

Author: MorphTuple

README.md

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 # Fictie
 ![Fictie Icon](https://github.com/MorphTuple/Fictie/blob/trunk/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png?raw=true)
 
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+[![Android CI](https://github.com/MorphTuple/Fictie/actions/workflows/android.yml/badge.svg)](https://github.com/MorphTuple/Fictie/actions/workflows/android.yml)
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 Fictie (/ˈfɪk.si/) is an [archiveofourown.org](https://archiveofourown.org) reader for Android
 written in Kotlin.