Update README.md

README.md

@@ -2,10 +2,20 @@
 
 A simple Kalman Filter implementation in Python
 
+## Dependencies
+
+The python packages `numpy`, `matplotlib` and `geopy` are required:
+
+```bash
+$ pip install numpy matplotlib geopy
+```
+
 ## Usage
 
 From the root directory of this repository run
 
 ```bash
-python -m kalman_filter
+$ python -m kalman_filter
 ```
+
+Which example is run can be changed in `kalman_filter/__main__.py`