New badge with the correct version of the latest, released package fo…

…r dependencies.

Signed-off-by: ingonoka <ingonoka@icloud.com>

README.adoc

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 = Library for managing CBA9 Banknote Validators
 
-image:https://img.shields.io/github/v/tag/ingonoka/cba9-driver?label=Latest[GitHub tag (latest by date)]
+image:https://img.shields.io/maven-central/v/com.ingonoka/cba9driver[Maven Central Version]
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 The library is meant for Android devices that are connected via USB to a CBA9 banknote validator.