Update README in BlankProjectTemplate reference folder to reflect ref naming convention

BlankProjectTemplate/ReferenceMaterial/README.md

@@ -3,3 +3,9 @@
 This folder holds information and resources of interest for the project.  This
 is intended to be a convenient location for project members to access
 support material for the project.
+
+References are named using the Nat Bib convention.  That is, the citation name,
+and the corresponding file name should be in the format AuthorYear.  If there is
+two author's the name should be Author1Author2Year.  For more than two authors,
+the name should be Author1EtAlYear.  In the preceding text, Author, Author1 and
+Author2 are the last names of the authors.