Added DOI and CITATION.cff

• registered the repository with Zenodo
• generated a DOI for this artifact
• added DOI to README.md
• added CITATION.cff metadata file

First release

First release of the original files, v1.0.0

This contains the original .pdf, .sib and .doc files provided by Sir Barry Ife, as well as a newly authored README.md to properly contextualize the artifact.