Add link to presentation for more information about the splitting process.

Author: kefo

README.md

@@ -1,5 +1,5 @@
 
-[![CircleCI](https://circleci.com/gh/lcnetdev/marc2bibframe2/tree/master.svg?style=svg)](https://circleci.com/gh/lcnetdev/marc2bibframe2)
+# [![CircleCI](https://circleci.com/gh/lcnetdev/marc2bibframe2/tree/master.svg?style=svg)](https://circleci.com/gh/lcnetdev/marc2bibframe2)
 
 # marc2bibframe2
 
@@ -55,6 +55,10 @@ stylesheet, it can be invoked:
 
     xsltproc xsl/ConvSpec-Preprocess0-Splitting.xsl test/data/marc.xml
 
+More information about this process was presented in July 2023.  That 
+presentation can be [viewed in full](https://www.youtube.com/watch?v=9i3y23XiNQE)
+or the [slides downloaded](https://www.loc.gov/bibframe/pdf/LD4-Breaking News-Splitting MARC records-20230712.pdf).
+
 ### Converter parameters
 The converter supports several optional parameters:
 - `baseuri` - the URI stem for generated entities. Default is