Build release version of cordova app and sign your apk

https://medium.com/beingcoders/create-a-signed-apk-file-using-cordova-cli-49ffbe423cee

https://www.youtube.com/watch?v=aHTfXivFe74  

https://stackoverflow.com/questions/35173542/unable-to-sign-the-unsigned-apk/35173700