improve dependencies install instructions
Created by: GlenDC
this step is different for Linux-, MacOS-MacPorts- and MacOS-Hombrew users, therefore I provided this step for each of the 3 target groups.
Created by: GlenDC
this step is different for Linux-, MacOS-MacPorts- and MacOS-Hombrew users, therefore I provided this step for each of the 3 target groups.