Added get it on F-Droid link

README.md

@@ -4,6 +4,10 @@ Transdroid
 [www.transdroid.org](http://www.transdroid.org)  
 [Google+](https://plus.google.com/u/0/b/106240944422491053650/106240944422491053650) - [Twitter](https://twitter.com/transdroid) - [transdroid@2312.nl](transdroid@2312.nl) - [Transdrone in Play Store](https://play.google.com/store/apps/details?id=org.transdroid.lite)  
 
+[<img src="https://f-droid.org/badge/get-it-on.png"
+      alt="Get it on F-Droid"
+      height="80">](https://f-droid.org/app/org.transdroid.lite)
+
 "Manage your torrents from your Android device"
 
 ![Screen shot of the main torretnts listing screen](http://2312.nl/img/portfolio-transdroid/240x400-transdroid-main.png)