Added shell prompt string. Should be printed every time user writes commands.
Added shell prompt string. Should be printed every time user writes commands.

cbiancucci/itba-computer_architecture,cbiancucci/itba-arquitectura,cbiancucci/itba-arquitectura,cbiancucci/itba-computer_architecture,cbiancucci/itba-computer_architecture,cbiancucci/itba-arquitectura