Add preprint to README (#6)

* Add preprint to README

* Update README.md

* Fix pre-commit config for trailing whitespace in MD linebreaks

.pre-commit-config.yaml

@@ -12,6 +12,7 @@ repos:
             name: Fix requirements*.txt
             files: ^requirements.*\.txt$
           - id: trailing-whitespace
+            args: [--markdown-linebreak-ext=md]
 
     - repo: https://github.com/jumanjihouse/pre-commit-hook-yamlfmt
       rev: 0.2.3

README.md

@@ -14,6 +14,13 @@
 
 Repository containing the reference implementation of the Datatractor API, published at [![Datatractor Yard](https://badgen.net/static/%F0%9F%9A%9Cdatatractor/yard)](https://yard.datatractor.org/).
 
+
+For more information, see the preprint:
+
+> **Datatractor: Metadata, automation, and registries for extractor interoperability in the chemical and materials sciences**  
+> Matthew L. Evans, Gian-Marco Rignanese, David Elbert & Peter Kraus  
+> [arXiv:2410.18839](https://arxiv.org/abs/2410.18839) (2024)
+
 ## `datatractor-beam` package
 
 This repository contains a draft Python 3.10 package, located under the `./beam` directory.