XRD trusted discovery workflow

[Brian Eaton <beaton@google.com>]

On the Monday morning call I said I hoped to put out an "implementer's
draft" type of proposal.  I don't think we're quite there yet, but
I've put together lots of examples with specific syntax that I think
will be useful:

http://wiki.oasis-open.org/xri/XrdOne/TrustWorkflowByExample

In particular, this document describes the relation between site-meta
and XRD and where URI templates are specified.

If this is confusing or just plain broken, let me know which bits and
I'll try to clarify.  Or maybe I'll be confused too, we'll see. =)