Update README.md

Author: alexevag

README.md

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 # Ethopy Analysis
+[![PyPI Version](https://img.shields.io/pypi/v/ethopy.svg)](https://pypi.python.org/pypi/ethopy-analysis/)
+[![Python Versions](https://img.shields.io/pypi/pyversions/ethopy.svg)](https://pypi.org/project/ethopy-analysis/)
+[![Documentation](https://img.shields.io/badge/docs-available-brightgreen.svg)](https://ef-lab.github.io/ethopy_analysis/)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 
 A comprehensive Python package for analyzing and visualizing behavioral data from Ethopy experiments.