Update README.md

README.md

@@ -5,6 +5,8 @@ CAVA [![Build Status](https://github.com/karlstav/cava/workflows/build-and-test/
 
 by [Karl Stavestrand](mailto:karl@stavestrand.no)
 
+<a href='https://play.google.com/store/apps/details?id=com.karlstav.cava&pcampaignid=pcampaignidMKT-Other-global-all-co-prtnr-py-PartBadge-Mar2515-1'><img alt='Get it on Google Play' src='https://play.google.com/intl/en_us/badges/static/images/badges/en_badge_web_generic.png' width="200"/></a>
+
 ![spectrum](https://github.com/karlstav/cava/blob/master/example_files/cava.gif "spectrum")
 
 [Demo video](https://youtu.be/9PSp8VA6yjU)