support for XdmNode as Input

cleanup

src/main/java/de/kosit/validationtool/impl/Printer.java

@@ -0,0 +1,21 @@
+package de.kosit.validationtool.impl;
+
+import java.text.MessageFormat;
+
+/**
+ * Wrapper for {@link System Systems} printing capability.
+ * 
+ * @author Andreas Penski
+ */
+public class Printer {
+
+    /**
+     * Writes to standard output channel.
+     * 
+     * @param message the message with placeholders
+     * @param params the params.
+     */
+    public static void writeOut(final String message, final Object... params) {
+        System.out.println(MessageFormat.format(message, params));
+    }
+}