Update README.md

README.md

@@ -2,6 +2,10 @@
 
 This Android app allows voice- and videocommunication without any server or Internet access. Simply scan each others contact QR-Code and call each other. This works on most networks such as community networks or even company networks.
 
+[<img src="https://f-droid.org/badge/get-it-on.png"
+     alt="Get it on F-Droid"
+     height="90">](https://f-droid.org/packages/d.d.meshenger/)
+
 ![Contact List](docs/contact_list.png)
 ![QR-Code Offer](docs/qr_offer.png)
 ![QR-Code Scanner](docs/qr_scanner.png)