Cyndi Rader submission for Unit 10

List of courses
GET list of courses
One course
GET one course
Post assignment
POST assignment, notice status code 201 created
One course
GET one course after POST, notice Unit 4 added
Assignments for one course
GET all assignments for one course
Update one assignment
PUT assignment, notice all 4 fields updated, status 200 OK
Delete one assignment
DELETE assignment, notice status 204
Delete one assignment
GET all assignments after DELETE, notice Unit 1 no longer there