message: docs: update README canvas example
diff: @@ -46,15 +46,13 @@ var pixelSize = 16;
  interact('.rainbow-pixel-canvas')
  .origin('self')
  .draggable({
  - modifiers: [
  - interact.modifiers.snap({
  - targets: [ interact.snappers.grid({
  - x: pixelSize, y: pixelSize
  - }) ],
  - }),
  + modifiers: [{
  + // snap to the corners of a grid
  + type: 'snap',
  + targets: [
  + interact.snappers.grid({ x: pixelSize, y: pixelSize }),
  ],
  - // allow multiple drags on the same element
  - maxPerElement: Infinity
  + }],
  })
  // draw colored squares on move
  .on('dragmove', function (event) {
  @@ -89,7 +87,7 @@ interact('.rainbow-pixel-canvas')
  interact(window).on('resize', resizeCanvases);
  ```
  -See the above code in action at http://codepen.io/taye/pen/YPyLxE
  +See the above code in action at https://codepen.io/taye/pen/tCKAm
  License
  -------
  