Update README.md

README.md

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 # FlorisBoard
 
-A open-source keyboard. Currently in planning/early-alpha stage.
+An open-source keyboard for Android. Currently in early-alpha stage.
+
+![Preview image](https://imgur.com/X5EkD4p.png)
+
+## Feature roadmap
+* [x] Basic implementation of the keyboard core (InputMethodService)
+* [x] Own implementation of deprecated KeyboardView (base only)
+* [x] QWERTY layout
+* [x] Special character layout(s)
+* [ ] Numeric layout
+* [ ] Emoji layout
+* [x] Caps + Caps Lock
+* [x] Key popups (buggy atm)
+* [x] More characters on long press
+* [ ] Preferences screen
+* [ ] Customize look and behaviour of keyboard
+* [ ] Theme customization
+* [ ] Adapt to situation in app (password, url, text, etc. )
+* [ ] Auto suggest words
+* [ ] Layout selection
+* [ ] Clipboard manager
+* [ ] One-hand mode
+* [ ] ...
+
+## Used libraries and icons
+* [Google Flexbox Layout for Android](https://github.com/google/flexbox-layout)
+  by [google](https://github.com/google)
+* [Google Material icons](https://github.com/google/material-design-icons) by
+  [google](https://github.com/google)
+* [Moshi JSON library](https://github.com/square/moshi) by
+  [square](https://github.com/square)
+
+## License
+This project is licensed under the [GPLv3 LICENSE](LICENSE)