Following feedback from previous draft(s) and July CAMG. I've updated the paper.

The document has been uploaded to the August Agenda (https://confluence.ihtsdotools.org/display/cmag/2016-08-09+-+CMAG+Meeting) - I meant to get it up there yesterday but wanted to tidy the formatting a little more first.

The live document is also available at https://docs.google.com/document/d/18inQurHU7rcsttNgde18TwBQfMEJ5DFti4wzXsazh7M/edit?usp=sharing if you wish to comment on it directly.

It's a little longer, as I've included numerous examples. I've also tried to clarify some of the jargon language I've used.

This discussion continues from that at https://confluence.ihtsdotools.org/display/cmag/Extension+Management