Merge pull request #13 from michielbdejong/patch-1

Correct statement about which function gets called

Author: michielbdejong

README.md

@@ -16,7 +16,7 @@ You can use this library in two ways.
 
 ### With a rdf library
 
-If a rdf library is provided then the map of namespaces given will be the result of calling `rdflib.Namespace` on the namespace urls.
+If a rdf library is provided then the map of namespaces given will be the result of calling `$rdf.namedNode` on the namespace urls.
 
 ```js
 const $rdf = require('rdflib');