Update README.md

Author: zlskidmore

README.md

@@ -57,6 +57,7 @@ If you would like to build the documentation locally, please install
 work on most machines. Then run `mkdocs serve` from within the `regtools`
 base directory.
 
+
 ## Acknowledgements
 
 Regtools uses several open-source libraries. We would like to thank the