add free ebook notification

Author: Packt-ITService

README.md

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+### Get this product for $5
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+<i>Packt is having its biggest sale of the year. Get this eBook or any other book, video, or course that you like just for $5 each</i>
+
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+<b><p align='center'>[Buy now](https://packt.link/9781789951998)</p></b>
+
+
+<b><p align='center'>[Buy similar titles for just $5](https://subscription.packtpub.com/search)</p></b>
+
+
 ## [Get this title for $10 on Packt's Spring Sale](https://www.packt.com/V12973?utm_source=github&utm_medium=packt-github-repo&utm_campaign=spring_10_dollar_2022)
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 For a limited period, all eBooks and Videos are only $10. All the practical content you need \- by developers, for developers