Merge origin/master

lib/README.md

 ## 'lib' project library directory
 
 This directory contains library jar files used by each of the course project directories.
+
+Of note:
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+* open-dis7-enumerations jar files contain all [SISO-REF-010](../specifications/README.md) values with sources automatically created from authoritative SISO XML as part of [open-dis7-source-generator](https://github.com/open-dis/open-dis7-source-generator) project
+* open-dis7-java jar files contain all [IEEE PDU packet types](../specifications/IeeeDisPduColorFigures.pdf), with sources automatically created from [XML descriptions](https://github.com/open-dis/open-dis7-source-generator/tree/master/xml) and results collected as part of [open-dis7-java](https://github.com/open-dis/open-dis7-java) project