only adding software citation

CITATION.cff

@@ -1,4 +1,5 @@
-software:
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
   - authors:
       - Matt Dawson
       - Kyle Shores
@@ -9,30 +10,4 @@ software:
     publisher: Zenodo
     title: NCAR/tuv-x: Version 0.5.0
     url: https://doi.org/10.5281/zenodo.8110063
-    version: v0.5.0
-
-citation:
-  - address: "Berlin, Heidelberg"
-    author:
-      - family: Madronich
-        given: Sasha
-      - family: Flocke
-        given: Siri
-    booktitle: Environmental Photochemistry
-    doi: "10.1007/978-3-540-69044-3_1"
-    editor:
-      - family: Boule
-        given: Pierre
-    isbn: "978-3-540-69044-3"
-    keywords:
-      - Earth-Sun geometry
-      - photolysis rate coefficients
-      - radiative transfer
-      - solar radiation
-      - spectral actinic flux
-    pages: "1--26"
-    publisher: Springer
-    series: The Handbook of Environmental Chemistry
-    title: The Role of Solar Radiation in Atmospheric Chemistry
-    url: https://doi.org/10.1007/978-3-540-69044-3_1
-    year: 1999
+    version: v0.5.0