removing kickstarter banner

Author: getify

README.md

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 # You Don't Know JS Yet (book series) - 2nd Edition
 
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-LOOK! **Please [support the Kickstarter](https://www.kickstarter.com/projects/getify/you-dont-know-js-yet-second-edition-books?ref=1cxjks)** to finish the remaining four books in the 2nd edition series.
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 This is a series of books diving deep into the core mechanisms of the JavaScript language. This is the **second edition** of the book series:
 
 <a href="https://leanpub.com/ydkjsy-get-started"><img src="get-started/images/cover.png" width="75"></a>&nbsp;&nbsp;