Update README.md

Author: seljabali

README.md

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 <p align="center"><strong>Java Time Kotlin extension functions.</strong></p>
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+  <a href="https://github.com/seljabali/java-time-fun/actions?query=branch%3Amain"><img alt="Build Status" src="https://github.com/seljabali/java-time-fun/actions/workflows/main.yml/badge.svg"/></a> 
+  <a href="https://repo1.maven.org/maven2/org/eljabali/sami/javatimefun/javatimefun/"><img alt="Maven Central" src="https://img.shields.io/maven-metadata/v?metadataUrl=https%3A%2F%2Frepo1.maven.org%2Fmaven2%2Forg%2Feljabali%2Fsami%2Fjavatimefun%2Fjavatimefun%2Fmaven-metadata.xml"/></a> 
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 ## Background
 [Java Time](https://docs.oracle.com/javase/8/docs/api/java/time/package-summary.html) became integrated to the JDK as of Java 8. It was a huge improvement over its [Date](https://docs.oracle.com/javase/8/docs/api/java/sql/Date.html) predecessor.<br><br>