Add Jamie Quinn to AUTHORS.md (GenericMappingTools#1596)

AUTHORS.md

@@ -10,6 +10,7 @@ The following people have contributed code and/or documentation to the project
 
 * [Abhishek Anant](https://twitter.com/itsabhianant) | [0000-0002-5751-2010](https://orcid.org/0000-0002-5751-2010) | Unaffiliated
 * [Dongdong Tian](https://seisman.info/) | [0000-0001-7967-1197](https://orcid.org/0000-0001-7967-1197) | Michigan State University
+* [Jamie Quinn](http://jamiejquinn.com) | [0000-0002-0268-7032](https://orcid.org/0000-0002-0268-7032) | University College London
 * [Jiayuan Yao](https://github.com/core-man) | [0000-0001-7036-4238](https://orcid.org/0000-0001-7036-4238) | Nanyang Technological University
 * [Kathryn Materna](https://github.com/kmaterna) | [0000-0002-6687-980X](https://orcid.org/0000-0002-6687-980X) | US Geological Survey
 * [Leonardo Uieda](http://www.leouieda.com/) | [0000-0001-6123-9515](https://orcid.org/0000-0001-6123-9515) | University of Liverpool