Revised PROV Overview

Hi All,

I've made available an updated version of prov-overview at

https://dvcs.w3.org/hg/prov/raw-file/default/overview/prov-overview.html

Let me know if your happy with it.

Important updates:
- changed the figure
- added a section on our namespace
- added a paragraph about how we meet the recommendations of the incubator
group

Thanks
Paul

-- 
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Dr. Paul Groth (p.t.groth@vu.nl)
http://www.few.vu.nl/~pgroth/
Assistant Professor
- Web & Media Group | Department of Computer Science
- The Network Institute
VU University Amsterdam