Add numbers.js

/*
Description:
Simple mission:

add() gets anywhere between 0 and 100 arguments (Integers) and returns their sum.

Examples
add() = 0
add(2) = 2
add(1, 1) = 2
add(1, 2, 3) = 6
add(-3, -2, -1, 1, 2, 3, 4) = 4
*/
function add (...n) {
  return n.reduce((a,b)=>a+b,0)
}