Create cms-open-data-instructions.xml

First skeleton for #441 
The orginal pdf was translated to html (with some language corrections) so the source can now be considered what is in http://opendata.cern.ch/VM/CMS/validation/report
The author is Anssi Puhakka - this is a special case of a contribution in collaboration with, but external to CMS,
I expect more of these cases in different collections in the future. 
Should we have the affiliation for the author? In this case Lapland University of Applied Sciences