Update README.md

Author: PaleNeutron

README.md

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 [![](https://img.shields.io/pypi/v/dataframe_image)](https://pypi.org/project/dataframe_image)
 [![PyPI - License](https://img.shields.io/pypi/l/dataframe_image)](LICENSE)
 [![Python Version](https://img.shields.io/pypi/pyversions/dataframe_image)](https://pypi.org/project/dataframe_image)
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 A package to convert pandas DataFrames as images.
 
 Also convert Jupyter Notebooks to PDF and/or Markdown embedding dataframe as image into it.