Add my ORCID and affiliation

The authorship guidelines introduced in fatiando/community#13 specify
that authors on Zenodo archives will be taken from the AUTHORS.md file
and need to have full names, affiliation, and ORCIDs (optionally)
included in that file.

AUTHORS.md

@@ -3,4 +3,4 @@
 The following people have made contributions to the project (in alphabetical
 order by last name) and are considered "The Erizo Developers":
 
-* [Leonardo Uieda](https://github.com/leouieda)
+* [Leonardo Uieda](https://github.com/leouieda) - University of Liverpool, UK (ORCID: 0000-0001-6123-9515)