Merge pull request #100 from alex-mashin/PROTOCOL

Provide a protocol to the link to ExportRDF

Author: gesinn-it-gea

src/JsonLDSerializer.php

@@ -52,7 +52,7 @@ public static function setJsonLD( $title, $outputPage ) {
 				'page' => $title->getFullText(),
 				'recursive' => '1',
 				'backlinks' => 0
-			] );
+			], false, PROTO_FALLBACK );
 
 			try {
 				$foaf = new \EasyRdf\Graph( $export_url );