Fixed bug where generate_random_schedule uses a hardcoded professor slot (6) from subroutine random_students
Subroutine random_students max professor slot now depend on professor schedule file
This caused error "Professor p0 schedule (starting at slot 4) is not correct format" because of difference in
total professor slot (6 instead of 4)

Added graph of generation x score
Merge branch 'master' of https://github.com/srhartono/Scheduler