added particle rugosity to scripts/ReadMe.md

Author: ramayo223

scripts/ReadMe.md

@@ -26,6 +26,9 @@ This folder contains scripts submitted by users or CCDC scientists for anyone to
 ### Create GAUSSIAN Input
 - Create GAUSSIAN input file (`.gjf`) for a given CSD refcode or `.mol2` file.
 
+### Particle Rugosity
+- Calculates the simulated (BFDH) particle rugosity weighted by facet area.
+
 ## Tips 
 A section for top tips in using the repository and GitHub. 
 ### Searching tips: