[poe] Issue: Add license example marked as Editorial

riannella has just labeled an issue for https://github.com/w3c/poe as 
"Editorial":

== Add license example ==
Add the below to the RDF/OWL encoding section (it was par of the Set 
example)

====
Because all of the rules associated with this policy have the same 
target, and do not have any constraints or duties (requirements), one 
may abbreviate the expression of the policy and use the Dublin Core 
rights or license predicates to associate the asset with that policy:

@prefix odrl: <http://www.w3.org/ns/odrl/2/> .
@prefix dct: <http://purl.org/dc/terms/> .

<http://example.com/asset:9898> dct:license 
<http://example.com/policy:0099> .

<http://example.com/policy:0099>
        a odrl:Set;
        odrl:permission odrl:reproduce ;
        odrl:prohibition odrl:modify .


See https://github.com/w3c/poe/issues/41