Update README and Adding License txt file for Bike Rides Dataset (#858)

Author: student-ChestaVashishtha

datasets/README.md

@@ -1,2 +1,3 @@
 `cps_85_wages.csv` is available at https://www.openml.org/d/534
 `adult-census.csv` is available at https://www.openml.org/d/15950
+`bike_rides.csv` is available at https://github.com/INRIA/scikit-learn-mooc/blob/main/datasets/bike_rides.csv

datasets/bikes_rides_LICENSE.txt

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+Creative Commons Attribution 4.0 International (CC BY 4.0)
+
+Dataset: bike_rides.csv
+Author: Guillaume Lemaitre
+Year: 2025
+
+This work is licensed under the Creative Commons Attribution 4.0 International License.
+
+You are free to:
+- Share — copy and redistribute the material in any medium or format
+- Adapt — remix, transform, and build upon the material for any purpose, even commercially
+
+Under the following terms:
+- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
+
+No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
+
+Suggested citation: Guillaume Lemaitre. (2025). bike_rides Dataset. Licensed under CC BY 4.0. Available at: https://github.com/INRIA/scikit-learn-mooc/blob/main/datasets/bike_rides.csv
+
+Full license text: https://creativecommons.org/licenses/by/4.0/legalcode