chart.js line 2.0

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.3/Chart.min.js"></script>
<canvas id="myChart" width="400" height="250"></canvas>
<input type="button" value="Add Data" onclick="adddata()">

JavaScript

var canvas = document.getElementById('myChart');
var data = {
    labels: ["1", "2", "3", "4", "5", "6", "7"],
    datasets: [
        {
            label: "My First dataset",
            fill: false,
            lineTension: 0.1,
            borderCapStyle: 'butt',
            borderJoinStyle: 'miter',
            data: [65, 59, 80, 0, 56, 55, 40],
        }
    ]
};

var now = new Date();

function adddata(){
	myLineChart.data.datasets[0].data[7] = Math.floor(Math.random()*80);
  myLineChart.data.labels[7] = now.getHours()+':'+now.getMinutes();
  myLineChart.update();
}

var option = {
	showLines: true
};
var myLineChart = Chart.Line(canvas,{
	data:data,
  options:option
});