[README] add link to the example jupyter notebook.

README.md

@@ -17,6 +17,9 @@ Install my project with pip
 * Bayesian calibration with MCMC using `emcee` package
 * Bayesian validation with model weights for multi-model setting
 
+## Examples
+- [Surrogate modeling](https://git.iws.uni-stuttgart.de/inversemodeling/bayesian-validation/-/blob/cleanup/tests/AnalyticalFunction/example_analytical_function.ipynb)
+
 ## Requirements
 * numpy==1.22.1
 * pandas==1.2.4