Add a note about the python bindings to the readme.

Author: ll-nick

README.md

@@ -76,6 +76,13 @@ or by specifying one comparison policy and threshold (100ms for example), and re
 
 More usage please check the unittest.
 
+## Python bindings
+
+The library can be used in Python via pybind11 bindings.
+Since util_caching is a template library, we need to explicitly instantiate the template for the types we want to use in Python.
+For this, we provide the convenience functions `bindNumberBasedCache` and `bindTimeBasedCache`.
+Check the unit test for a usage example.
+
 
 ## Installation
 
@@ -178,4 +185,4 @@ docker compose -f demo/docker-compose.ros.yaml build
 docker compose -f demo/docker-compose.ros.yaml run --rm util_caching_ros
 ```
 
-See [demo/README.md](demo/README.md) for how to run the demo, showcasing the use of `util_caching` in a ROS node.
+See [demo/README.md](demo/README.md) for how to run the demo, showcasing the use of `util_caching` in a ROS node.