add missing repo links for 1407 mastermind
Merge branch 'master' of https://github.com/turingschool/ruby-submissions
Merge branch 'master' of https://github.com/turingschool/ruby-submissions
Merge branch 'master' of https://github.com/turingschool/ruby-submissions
Merge branch 'master' of https://github.com/turingschool/ruby-submissions
add submissions yml for 1409 mastermind