code: function render () {
    todosContainer.innerHTML = '<ul>' +
      todos.map(function (todo, index) {
        return '<li class="item">' +
          todo +
          ' <button class="remove-todo" data-index="' + index + '">X</button>' +
        '</li>'
      }).join('') +
    '</ul>'
  }
docs: ------ RENDER ------