Add arxiv citation

Author: ajaymur91

CITATION.cff

@@ -1,4 +1,12 @@
 cff-version: 1.2.0
-message: "If you use this software, please cite:
-Muralidharan, Ajay, and Arun Yethiraj. "Fast estimation of ion-pairing for screening electrolytes: A cluster can approximate a bulk liquid." arXiv preprint arXiv:2110.14036 (2021)
-"
+message: "If you use this software, please cite it as below."
+authors:
+- family-names: "Muralidharan"
+  given-names: "Ajay"
+  orcid: "https://orcid.org/0000-0003-0052-8780"
+- family-names: "Yethiraj"
+  given-names: "Arun"
+  orcid: "https://orcid.org/0000-0002-8579-449X"
+title: "Fast estimation of ion-pairing for screening electrolytes: A cluster can approximate a bulk liquid."
+url: "https://github.com/ajaymur91/CLIPS"
+