Update README.md

Author: gulabpatel

README.md

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 # TimeSeries
 In this repository, we would see different tools for time series analysis like, ARIMA, LSTM, Facebook Prophet for uni and multi variate.
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+### 8 Visualizations with Python to Handle Multiple Time-Series Data
+https://towardsdatascience.com/8-visualizations-with-python-to-handle-multiple-time-series-data-19b5b2e66dd0