examples: Add example text and xml output generated from dvb_print_si.

For source file is used the output generated by examples/dvb_gen_si.

examples/dvb_gen_si.test.sh

+#!/bin/sh
+# Script to test PSI generation and parsing
+# Copyright (C) 2011 Unix Solutions Ltd.
+#
+# License: MIT
+# Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
+#
+
+rm dvb_gen_si dvb_print_si
+make local
+
+./dvb_gen_si | ./dvb_print_si        > dvb_print_si.output.txt
+./dvb_gen_si | ./dvb_print_si -x xml > dvb_print_si.output.xml
+
+git diff dvb_print_si.output.txt dvb_print_si.output.xml