Added Google Play link

README.md

@@ -16,7 +16,7 @@
   <h3 align="center">An app to ease your FFCS</h3>
 
   <p align="center">
-     <img src="https://img.shields.io/badge/Explore%20the%20docs-%3E%3E-blue?style=for-the-badge&logo=readthedocs">
+     <a href='https://play.google.com/store/apps/details?id=com.tfd.ffcsez&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="193.8" height="75"/></a>
   </p>
 
    <p align="center">