allows you to update the name and course number of a course in the database
adds the ability to delete a course from the database
add a method that list all students in a course, using a join.
add a method that lists out all the courses a student is in, using a join
add the beginning of a user menu for student tracker
expand on main menu, and add a menu for modifying selected courses.
complete the entire menu, with main menu, course menu, and student menu. All menus are fully functional.
Add spec and passing function with the ability to delete a student from a course, and add it to the user interface.
add README file.