Add support for base64 and hexBinary types

lib/device.js

@@ -51,6 +51,8 @@ function sanitizeParameterValue(parameterValue) {
         }
         break;
       case 'xsd:string':
+      case 'xsd:base64':
+      case 'xsd:hexBinary':
         if (typeof parameterValue[0] !== 'string') {
           parameterValue[0] = '' + parameterValue[0];
         }