Update doap:license to https://unlicense.org/.

Author: gkellogg

README.md

@@ -42,6 +42,8 @@ Both reader and writer include provisional support for [Turtle*][RDF*].
 
 Internally, an `RDF::Statement` is treated as another resource, along with `RDF::URI` and `RDF::Node`, which allows an `RDF::Statement` to have a `#subject` or `#object` which is also an `RDF::Statement`.
 
+**Note: This feature is subject to change or elimination as the standards process progresses.**
+
 ### Serializing a Graph containing embedded statements
 
     require 'rdf/turtle'
@@ -52,10 +54,10 @@ Internally, an `RDF::Statement` is treated as another resource, along with `RDF:
 
 ### Reading a Graph containing embedded statements
 
-By default, the N-Triples reader will reject a document containing a subject resource.
+By default, the Turtle reader will reject a document containing a subject resource.
 
     ttl = %(
-      @prefix foaf: <> .
+      @prefix foaf: <http://xmlns.com/foaf/0.1/> .
       @prefix ex: <http://example.com/> .
       <<<bob> foaf:age 23>> ex:certainty 9.0e-1 .
     )

etc/doap-ntriples.ttl

@@ -8,7 +8,7 @@
 <> a doap:Project ;
   doap:name          "RDF.rb" ;
   doap:homepage      <https://rubygems.org/gems/rdf> ;
-  doap:license       <http://creativecommons.org/licenses/publicdomain/> ;
+  doap:license       <https://unlicense.org/> ;
   doap:shortdesc     "A Ruby library for working with Resource Description Framework (RDF) data."@en ;
   doap:description   "RDF.rb is a pure-Ruby library for working with Resource Description Framework (RDF) data."@en ;
   doap:created       "2007-10-23" ;
@@ -20,7 +20,7 @@
                      <http://www.w3.org/TR/n-triples/> ;
   doap:download-page <https://rubygems.org/gems/rdf/> ;
   doap:bug-database  <https://github.com/ruby-rdf/rdf/issues> ;
-  doap:blog          <https://ar.to/>, <http://blog.datagraph.org/> ;
+  doap:blog          <https://ar.to/>, <https://greggkellogg.net/> ;
   doap:developer     <https://ar.to/#self>, <https://bhuga.net/#ben>, <https://greggkellogg.net/foaf#me> ;
   doap:maintainer    <https://greggkellogg.net/foaf#me> ;
   doap:documenter    <https://ar.to/#self>, <https://bhuga.net/#ben>, <https://greggkellogg.net/foaf#me> ;

etc/doap.nt

@@ -3,7 +3,7 @@
 <https://rubygems.org/gems/rdf-turtle> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/earl#Software> .
 <https://rubygems.org/gems/rdf-turtle> <http://usefulinc.com/ns/doap#name> "RDF::Turtle" .
 <https://rubygems.org/gems/rdf-turtle> <http://usefulinc.com/ns/doap#homepage> <https://ruby-rdf.github.com/rdf-turtle> .
-<https://rubygems.org/gems/rdf-turtle> <http://usefulinc.com/ns/doap#license> <http://creativecommons.org/licenses/publicdomain/> .
+<https://rubygems.org/gems/rdf-turtle> <http://usefulinc.com/ns/doap#license> <https://unlicense.org/> .
 <https://rubygems.org/gems/rdf-turtle> <http://usefulinc.com/ns/doap#shortdesc> "Turtle reader/writer for Ruby."@en .
 <https://rubygems.org/gems/rdf-turtle> <http://usefulinc.com/ns/doap#description> "RDF::Turtle is an Turtle reader/writer for the RDF.rb library suite."@en .
 <https://rubygems.org/gems/rdf-turtle> <http://usefulinc.com/ns/doap#created> "2011-08-29"^^<http://www.w3.org/2001/XMLSchema#date> .

etc/doap.ttl

@@ -11,7 +11,7 @@
 <> a doap:Project, earl:TestSubject, earl:Software ;
   doap:name          "RDF::Turtle" ;
   doap:homepage      <https://ruby-rdf.github.com/rdf-turtle> ;
-  doap:license       <https://creativecommons.org/licenses/publicdomain/> ;
+  doap:license       <https://unlicense.org/> ;
   doap:shortdesc     "Turtle reader/writer for Ruby."@en ;
   doap:description   "RDF::Turtle is an Turtle reader/writer for the RDF.rb library suite."@en ;
   doap:created       "2011-08-29"^^xsd:date ;