Update README.md

README.md

@@ -58,7 +58,9 @@ To reproduce the performance of our BARO, we have prepared two Google Colab Note
 1. [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/drive/120svKTl53cK8KId1rFSrw0BOqnReMB0j?usp=sharing): This notebook reproduces the RCA performance of BARO (also at [tutorials/reproducibility.ipynb](https://github.com/phamquiluan/baro/blob/main/tutorials/reproducibility.ipynb)).
 2. [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/drive/1TObicUGcP9Z9xqML-iJxDo_Vlttp1Lpm?usp=sharing): This nodebook reproduces the output of the Multivariate BOCPD module. 
 
+## Running Time \& Instrumentation Cost
 
+Please refer to our [docs/running_time_and_instrumentation_cost.md](docs/running_time_and_instrumentation_cost.md) document.
 
 ## Citation