Add timeZone param to sample config

src/main/java/no/nibio/vips/model/naerstadmodel/NaerstadModel.java

@@ -228,6 +228,7 @@ public class NaerstadModel extends I18nImpl implements Model{
                 "\t},\n" +
                 "\t\"modelId\":\"" + MODEL_ID.toString() + "\",\n" +
                 "\t\"configParameters\":{\n" +
+                "\t\t\"timeZone\":\"Europe/Oslo\", \n" +
                 "\t\t\"calculationStart\":\"2012-08-20T00:00:00+02:00\",\n" +
                 "\t\t\"calculationEnd\":\"2012-08-30T00:00:00+02:00\",\n" +
                 "\t\t\"observations\":[\n" +