Update cli_printMessage.sh:
    
        - Add `AsSeparatorLine' feature to produce separator lines output. 
        
          Instead of using `echo' to print separator lines, use this
          feature to draw separator lines.  Notice that you can change the
          character passed as message in order to produce different
          separator styles.
    
            For example:
    
            1) cli_printMessage '-' 'AsSeparatorLine' outputs:
    
            ----------------------------------------------------------------------
    
            2) cli_printMessage '*' 'AsSeparatorLine' outputs:
    
            **********************************************************************
    
        - As convenction, separator lines are drawn horizontally up to 70
          characters width.