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/9781838648121)</p></b>
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+<b><p align='center'>[Buy similar titles for just $5](https://subscription.packtpub.com/search)</p></b>
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 # Hands-on JavaScript for Python Developers
 
 <a href="https://www.packtpub.com/product/hands-on-javascript-for-python-developers/9781838648121?utm_source=github&utm_medium=repository&utm_campaign=9781838648121"><img src="https://packt-type-cloud.s3.amazonaws.com/uploads/sites/3634/2020/09/Cover.png" alt="Hands-on JavaScript for Python Developers" height="256px" align="right"></a>