Add output_memory_usage to configutation documentation

Author: IshaanDesai

docs/configuration.md

@@ -30,10 +30,12 @@ The Micro Manager is configured with a JSON file. An example configuration file
 
 This example configuration file is in [`examples/micro-manager-config.json`](https://github.com/precice/micro-manager/tree/develop/examples/micro-manager-config.json).
 
-The path to the file containing the Python importable micro simulation class is specified in the `micro_file_name` parameter. If the file is not in the working directory, give the relative path.
+The path to the file containing the Python importable micro simulation class is specified in the `micro_file_name` parameter. If the file is not in the working directory, give the relative path from the directory where the Micro Manager is executed.
 
 Set the output [log](tooling-micro-manager-logging.html) directory using the parameter `output_dir`.
 
+To output the runtime memory usage, set `output_memory_usage` to `True`. This will output a CSV file with the peak memory usage (RSS) in every time window, in MBs.
+
 There are three main sections in the configuration file, the `coupling_params`, the `simulation_params` and the optional `diagnostics`.
 
 ## Coupling Parameters