Made R command line work in both /R-Portable-Mac and /R-Portable-Mac/bin directory
Made R command line work in both /R-Portable-Mac and /R-Portable-Mac/bin directory

ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start,ColumbusCollaboratory/electron-quick-start