Update README

Author: Gregor Santner

README.md

@@ -6,13 +6,21 @@ Latest modification: 03. Mar 2016 (v1.12)
 License: **GPLv3**  
 Android app created and maintained by Gregor Santner (<http://de-live-gdev.github.io>), 2014-  
 
+<span class="badge-githubfollow"><iframe src="https://ghbtns.com/github-btn.html?user=de-live-gdev&amp;type=follow&amp;count=true" allowtransparency="true" frameborder="0" scrolling="0" width="165" height="20"></iframe></span>
+<span class="badge-githubstar"><iframe src="https://ghbtns.com/github-btn.html?user=de-live-gdev&amp;repo=kimai-android&amp;type=watch&amp;count=true" allowtransparency="true" frameborder="0" scrolling="0" width="110" height="20"></iframe></span>
+<span class="badge-bitcoin"><a href="https://de-live-gdev.github.io/donate/#donate" title="Donate once-off to this project using Bitcoin"><img src="https://img.shields.io/badge/bitcoin-donate-yellow.svg" alt="Bitcoin donate button" /></a></span>
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+[![F-Droid](https://f-droid.org/wiki/images/0/06/F-Droid-button_get-it-on.png)](https://f-droid.org/repository/browse/?fdfilter=kimai&fdid=de.live.gdev.timetracker)
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 ## Download
 
 * [Release archive](https://github.com/de-live-gdev/kimai-android/releases)
 * [F-Droid](https://f-droid.org/repository/browse/?fdid=de.live.gdev.timetracker)
-* [Your own repo](https://gitlab.com/fdroid/fdroiddata/raw/master/metadata/de.live.gdev.timetracker.txt)
+* [Your own F-Droid repo](https://gitlab.com/fdroid/fdroiddata/blob/master/metadata/de.live.gdev.timetracker.txt)
 * [~~Google Play~~](https://play.google.com/store/apps/details?id=de.live.gdev.timetracker)
 
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 ## English description
 App for the time managment application Kimai.  
 This app makes mobile tracking and logging into your kimai existing installation easier.