wip: transportation services with discount

src/BusProNet/XmlParser/TravelParser.php

@@ -178,6 +178,8 @@ class TravelParser extends AbstractParser
             $service->label = $this->getStringOrNullValue($serviceNode->filterXPath('//text'));
             $service->direction = $this->getStringOrNullValue($serviceNode->filterXPath('//richtung'));
             $service->status = $this->getStringOrNullValue($serviceNode->filterXPath('//status'));
+            $service->price = $this
+                ->stringToFloat($this->getStringOrNullValue($serviceNode->filterXPath('//preis')));
 
             // Parse optional description from hinweis node
             $description = $this->getStringOrNullValue($serviceNode->filterXPath('//hinweis'));