code: public static MatFileHeader createHeader()
      {
          return new MatFileHeader( DEFAULT_DESCRIPTIVE_TEXT + (new Date()).toString(), 
                                      DEFAULT_VERSION, 
                                      DEFAULT_ENDIAN_INDICATOR,
                                      ByteOrder.BIG_ENDIAN );
      }
docs: A factory. Creates new <code>MatFileHeader</code> instance with default header values:
  <ul>
  <li>MAT-file is 5.0 version</li>
  <li>version is set to 0x0100</li>
  <li>no byte-swapping ("IM")</li>
  </ul>
  
  @return - new <code>MatFileHeader</code> instance