Update README.md

README.md

@@ -2,29 +2,26 @@
 
 [<img src="https://f-droid.org/badge/get-it-on.png" alt="Get it on F-Droid" height="60">](https://f-droid.org/repository/browse/?fdfilter=sudoku&fdid=org.secuso.privacyfriendlysudoku)<a href="https://play.google.com/store/apps/details?id=org.secuso.privacyfriendlysudoku"><img src="https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png" height="60"></a>
 
-Privacy Friendly Sudoku is a logic based game and belongs to the group of Privacy Friendly Apps developed by Technische Universität Darmstadt, Germany.
-
-This app is optimized regarding the user's privacy. It doesn't use any tracking mechanisms, neither it displays any advertisement.
-Also it does not use any permission, as the app can provide its full functionality without the usage of permissions. 
-It also does neither include advertisement nor tracking mechanisms.
+Privacy Friendly Sudoku is a logic based game. This app belongs to the group of [Privacy Friendly Apps](https://secuso.org/pfa) developed by the [SECUSO](https://secuso.org/) Group at [Karlsruher Institute for Technology (KIT)](https://www.kit.edu). It is optimized regarding the user's privacy. It doesn't use any tracking mechanisms, neither it displays any advertisement. Also it does not use any permission, as the app can provide its full functionality without the usage of permissions. 
 
 ## Motivation 
 
-As it is part of the Privacy Friendly Apps developed by the SECUSO research group of the Technische 
-Universtität Darmstadt in Germany it is optimized due to user's privacy.
+Privacy Friendly Apps are group of Android applications which are optimized regarding privacy. Further information can be found on https://secuso.org/pfa
 
 ## Building
 
-Further development requires Android Studio, we recommend to use at least version 3.0.1
+Further development requires Android Studio, we recommend to use the latest version.
 
 ### API Reference
 
 Mininum SDK: 16
-Target SDK: 25 
+Target SDK: 29 
 
 ## License
 
-Privacy Friendly Sudoku is lisenced under the GPLv3. Copyright (C) 2016-2018 Christopher Beckmann and Timm Lippert
+Privacy Friendly Sudoku is lisenced under the GPLv3.<br /> 
+Copyright (C) 2016-2018 Christopher Beckmann and Timm Lippert<br />
+Copyright (C) 2018-2020 Christopher Beckmann<br />
 
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
 
@@ -42,11 +39,17 @@ App-Icon:
 Markus Hau
 
 Github-Users: <br />
-Kamuno <br />
-Gongxter <br />
-Yonjuni <br />
+Kamuno (Christopher Beckmann)<br />
+Gongxter (Timm Lippert)<br />
+uykek (Katharina Kaus)<br />
+ErikWaegerle (Erik Wägerle)<br />
+Yonjuni (Karola Marky)<br />
+sleep-yearning <br />
 Agmagor <br />
 brainyperfect <br />
-
-
+WaldiSt<br />
+naofum<br />
+lna91<br />
+xinxinxinxinxin<br />
+hype11<br />