update README

README.md

@@ -1,15 +1,27 @@
 <div align="center">
 
-<img src="app/src/main/prism.webp" alt="Prism Icon" width="80" height="80" />
+<img src="assets/prism.webp" alt="Prism Icon" width="80" height="80" />
 
 # Prism
 
-</div>
+A [UnifiedPush](https://unifiedpush.org/) distributor with optional self-hosted [Prism](https://github.com/lone-cloud/prism) server integration.
 
-A notification provider for [Prism](https://github.com/lone-cloud/prism) and [UnifiedPush](https://unifiedpush.org/) applications.
+<a href="https://github.com/lone-cloud/prism-android/releases">
+    <img src="assets/get-it-on-github.png" alt="Get it on GitHub" height="80">
+</a>
+
+</div>
 
 ## APK signature fingerprint
 
 Use this SHA-256 signing certificate fingerprint to verify releases:
 
 `FD:29:86:45:7A:6A:6E:4D:D9:05:6B:3C:A5:A6:9E:0E:DF:D5:AA:9D:D4:5B:3D:78:DB:21:E8:AD:72:FB:AE:AD`
+
+## Screenshots
+
+<p>
+  <img src="assets/screenshots/list-light.png" alt="List (light)" width="200" />
+  <img src="assets/screenshots/list-dark.png" alt="List (dark)" width="200" />
+  <img src="assets/screenshots/settings.png" alt="Settings" width="200" />
+</p>