Add Fdroid metadata

Author: hbmartin

README.md

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 [![CodeFactor](https://www.codefactor.io/repository/github/hbmartin/onyx-boox-screensaver-gol/badge)](https://www.codefactor.io/repository/github/hbmartin/onyx-boox-screensaver-gol)
 [![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=hbmartin_onyx-boox-screensaver-gol&metric=sqale_rating)](https://sonarcloud.io/summary/new_code?id=hbmartin_onyx-boox-screensaver-gol)
 
-GoL Screensaver is an app that generates and updates screensavers for Onyx Boox using [Conway's Game of Life Algorithm](https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life). Optimized for e-ink screens!
+GoL Screensaver is an app that generates and updates screensavers for Onyx Boox using [Conway's Game of Life algorithm](https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life). Optimized for e-ink screens!
 
 <img src="media/screenshot.webp" width="45%" /> <img src="media/screenshot2.webp" width="45%" />
 

metadata/en-US/full_description.txt

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+GoL Screensaver is an app that generates and updates screensavers for Onyx Boox using Conway's Game of Life algorithm.
+
+Features:
+- Auto-updating screensaver based on Conway's Game of Life
+- Customizable foreground and background colors (chosen specifically for color e-ink)
+- Pattern picker for common Game of Life starting states.
+
+Usage:
+- Install the app on using F-Droid or building from source.
+- Disable freezing in order to for the game to self-update
+   - Settings > Apps & Notifications > Freeze Settings > GoL Wallpaper (OFF)
+   - Note: Updates happen at most every 15 minutes and **only** with sufficient battery
+- Launch the app!
+   - (Optional) Choose foreground and background colors in the app
+   - (Optional) Pick a starting pattern
+   - (Optional) Tap "Generate Next Step" to advance the Game of Life and update your wallpaper
+

metadata/en-US/images/icon.png

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+Conway's Game of Life screensaver for Onyx Boox Android devices

metadata/en-US/images/phoneScreenshots/1.png

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+GoL Screensaver