a basic naval battle based on the sigaction command for comunication.
MAKE GCC
go to the root and use MAKE to create the "navy" binary
player 1: ./navy [navy_position]
player 2: ./navy [first_player_pid] [navy_position]
navy_positions: file representing the positions of the ships (see on pos1 file or pos2).
the first_player_pid is displayed on player 1 execution