希望增加按住拼图块也能拉动的功能

[jinxishe]

能不能加个按住图片上的拼图块也能拉动的功能？而不是只能在下方滑块处拉动

[jinxishe]

我自己改了一下bindEvents部分，i modified the bindEvents part to support block slide.

`this.slider.addEventListener('mousedown', handleDragStart);
this.slider.addEventListener('touchstart', handleDragStart);
// document.addEventListener('mousemove', handleDragMove);
// document.addEventListener('touchmove', handleDragMove);
// document.addEventListener('mouseup', handleDragEnd);
// document.addEventListener('touchend', handleDragEnd);
// document.addEventListener('mousedown', function () { return false; });
// document.addEventListener('touchstart', function () { return false; });
// document.addEventListener('swipe', function () { return false; });
this.slider.addEventListener('mousemove', handleDragMove);
this.slider.addEventListener('touchmove', handleDragMove);
this.slider.addEventListener('mouseup', handleDragEnd);
this.slider.addEventListener('touchend', handleDragEnd);
this.slider.addEventListener('mousedown', function () { return false; });
this.slider.addEventListener('touchstart', function () { return false; });
this.slider.addEventListener('swipe', function () { return false; });

this.block.addEventListener('mousedown', handleDragStart);
this.block.addEventListener('touchstart', handleDragStart);
this.block.addEventListener('mousemove', handleDragMove);
this.block.addEventListener('touchmove', handleDragMove);
this.block.addEventListener('mouseup', handleDragEnd);
this.block.addEventListener('touchend', handleDragEnd);
this.block.addEventListener('mousedown', function () { return false; });
this.block.addEventListener('touchstart', function () { return false; });
this.block.addEventListener('swipe', function () { return false; });`