Added DOI and CITATION.cff, v1.0.1

CITATION.cff

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+cff-version: 1.0.1
+message: "If you use this software, please cite it as below."
+title: "A Typographical Facsimile of Scarlatti's Barcelona MS. 1964 Manuscript"
+authors:
+  - family-names: Barry
+    given-names: Ife
+    orcid: https://orcid.org/0000-0003-3830-6198
+abstract: "This repository contains the Sibelius source and PDF sheet music of a 'typographical facsmile' of the Barcelona MS 1964 manuscript containing 37 known Domenico Scarlatti sonatas, and 2 of spurious attribution. The typographical facsimile is identical in all manners to the original manuscript, down to the direction of the stems."
+version: v1.0.1
+doi: 10.5281/zenodo.6575347
+license: MIT
+date-released: 2022-05-24
+keywords:
+  - scarlatti
+  - sheet music
+  - typographical facsimile

README.md

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 # A Typographical Facsimile of Scarlatti's Barcelona MS. 1964 Manuscript
 
+[![DOI](https://zenodo.org/badge/494670605.svg)](https://zenodo.org/badge/latestdoi/494670605)
+
 This repository contains the Sibelius source and PDF sheet music of a **typographical facsmile**
 of the Barcelona MS 1964 manuscript containing Domenico Scarlatti sonatas.