Update README.md

Author: AnupKumarPanwar

README.md

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 # The Algorithms - Java
+[![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=JP3BLXA6KMDGW)
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 NOTE: A [Development](https://github.com/TheAlgorithms/Java/tree/Development) branch is made for this repo where we are trying to migrate the existing project to a Java project structure. You can switch to [Development](https://github.com/TheAlgorithms/Java/tree/Development) branch for contributions. Please refer [this issue](https://github.com/TheAlgorithms/Java/issues/474) for more info.