Update README.md

Author: mbahmani

README.md

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 # 1- Introduction
-This is a **comprehensive ML techniques with python** , that I have spent for more than two months to complete it.
+This is a **comprehensive ML techniques with python** , that I have spent for more than 6 months to complete it.
 
 I think it is a great opportunity for who want to learn machine learning workflow with python completely.
 I have covered most of the methods that are implemented for iris until **2018**, you can start to learn and review your knowledge about ML with a simple dataset and try to learn and memorize the workflow for your journey in Data science world.