nnnick/Chart.js — pull request #840 by tannerlinsley (2014-12-30 18:01:43+00:00)
Title: Custom Tooltips and Samples

Creates a chart option for custom tooltips
```javascript
customTooltips: false // default
customTooltips: function(tooltip){
if(!tooltip){
//hide tooltip
return;
}

//Show custom tooltip
//tooltip.x,
//tooltip.y,
//etc...
}
```

Samples included for pie/doughnut and line chart types.