More code for reversi game. Not compiled.
Just saving the day' work. Remaining tasks is to make get_neighbors accept a char as the second param.
This param will specify exactly what kind of neighbor are we looking for.
Also, we need to refactor the code that calculates the possible points from all neighbors.
This code sould be taken out in a function and then  can be reused to get the points won by the
human user.