Add Gaussian Anomaly Detection demo.

homemade/anomaly_detection/README.md

@@ -1,5 +1,9 @@
 # Anomaly Detection Using Gaussian Distribution
 
+## Jupyter Demos
+
+▶️ [Demo | Anomaly Detection](https://nbviewer.jupyter.org/github/trekhleb/homemade-machine-learning/blob/master/notebooks/anomaly_detection/anomaly_detection_gaussian_demo.ipynb) - find anomalies in server operational parameters like `latency` and `threshold`
+
 ## Gaussian (Normal) Distribution
 
 The **normal** (or **Gaussian**) **distribution** is a very common continuous probability distribution. Normal distributions are important in statistics and are often used in the natural and social sciences to represent real-valued random variables whose distributions are not known. A random variable with a Gaussian distribution is said to be normally distributed and is called a normal deviate.