Add examples (issue #5)

This version introduces multiple enhancements:

added all other examples for Object

Details of additions/deletions below:
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Modified:   examples/base_object.php
            -- Updated --
                some example changed

Modified:   examples/base_object/recursive.php
Modified:   examples/base_object/merge_data.php
Modified:   examples/base_object/export_data.php
Modified:   examples/base_object/compare_data.php
Modified:   examples/base_object/destroy_data.php