Update Readme.md

Author: tirthajyoti

Synthetic_data_generation/Readme.md

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 # Synthetic dataset generation
+### [Read my article on Medium about synthetic data generation and why it is critical for self-driven data science](https://towardsdatascience.com/synthetic-data-generation-a-must-have-skill-for-new-data-scientists-915896c0c1ae)
+![image](https://cdn-images-1.medium.com/max/1250/1*R6gx4HIUcIcyCSlQpYWKFA.jpeg)
 ### Synthetic data set for regression, classification, and clustering using scikit-learn functions
 ### Synthetic random regression and classification problems using symbolic expressions (using `sympy` package)
 ### Synthetic categorical data (name, address, phone number, office title, license plate etc.) generation usinf `pydbgen` package