Merge pull request #30 from cct-datascience/citation

Citation

Author: Aariq

CITATION.cff

@@ -33,6 +33,9 @@ authors:
       Technologies
     email: [email protected]
     orcid: 'https://orcid.org/0000-0003-3802-3331'
+identifiers:
+  - type: doi
+    value: 10.5281/zenodo.14907483
 repository-code: 'https://github.com/cct-datascience/ggplot2-workshop-series'
 url: 'https://cct-datascience.github.io/ggplot2-workshop-series/'
 keywords:

README.md

@@ -2,7 +2,7 @@
 
 <!-- badges: start -->
 
-[![License: CC BY 4.0](https://img.shields.io/badge/License-CC_BY_4.0-lightgrey.svg)](https://creativecommons.org/licenses/by/4.0/)
+[![License: CC BY 4.0](https://img.shields.io/badge/License-CC_BY_4.0-lightgrey.svg)](https://creativecommons.org/licenses/by/4.0/) [![DOI](https://zenodo.org/badge/795621206.svg)](https://doi.org/10.5281/zenodo.14907482)
 
 <!-- badges: end -->
 
@@ -11,4 +11,4 @@ Source code for materials for a data visualization workshop series.
 If you use or adapt these materials, please cite them as follows:
 
 > Scott E, Guo J, Diaz R, Riemer K (2025).
-> “Leveling up your data visualization skills with ggplot2.” <https://cct-datascience.github.io/ggplot2-workshop-series/>.
+> “Leveling up your data visualization skills with ggplot2.” DOI: 10.5281/zenodo.14907483.