Merge pull request #4 from ChrisBoesch/master

update 14/06
ranking 7"
Merge pull request #5 from ChrisBoesch/master

update 14/06 v2
ranking 7"
ranking for all paths method update
Merge pull request #57 from Arathi298/master

ranking update
Merge pull request #41 from ChrisBoesch/master

update