Create credit folder

[JessePeplinski]

• Create a folder that reads
  potsdamacm.com/credit/semester/students/student-name. This will allow students to have their own webpage and link to all of the work they have done on their previous semesters.
• Upload personal contributions from spring 2017, fall 2016, spring 2016, and fall 2015.
• Create README for contributing
• Create student directories potsdamacm.com/peplinjj199