init MongoDB
$ mongod
init Node Server
$ ../node_db_server/yarn start
show all students
- get('/api/students')
add a Student
- post('/api/student')
Search student by ID
- get('/api/student/:id')
Update student
- put('/api/student/:id')
Increment by 1 student votes
- put('/api/student_plus/:id')
Decrement by 1 student votes
- put('/api/student_less/:id')
Delete student
- delete('/api/student/:id')