template specialization references

Posting these per the current LWDITA meeting.

"Pre-overview" by Michael Preistley, from CIDM DITA 2016 Reston VA
http://www.slideshare.net/mpriestley/lightweight-dita-a-preoverview

More info on this from LWDITA GitHub repo:
https://github.com/oasis-open/dita-lightweight/tree/master/specialization

Mark Giffin
Mark Giffin Consulting, Inc.
http://markgiffin.com/