README.md in rdf-ldp-0.7.0 vs README.md in rdf-ldp-0.8.0

@@ -80,10 +80,10 @@
 #   - You may not need an initial "base" container, if you handle create on PUT
 #     requests.
 #
 repository = RDF::Repository.new 
 RDF::LDP::Container.new(RDF::URI('http://localhost:9292/'), repository)
-  .create('', 'text/plain') if repository.empty?
+  .create(StringIO.new(''), 'text/plain') if repository.empty?
 
 app = proc do |env|
   # Return a Rack response, giving an `RDF::LDP::Resource`-like object as the body.
   # The `Rack::LDP` middleware marhsalls the request to the resource, builds the response,
   # and handles conneg for RDF serializations (when the body is an `RDF::LDP::RDFSource`).