React -> Warning: module.exports.getDOMNode(...) is deprecated. Please use ReactDOM.findDOMNode(instance) instead.

[desduvauchelle]

Hello.

Thanks for the awesome plugin!

Little issue when I use it with React v0.14.6

I get the following errors:

Warning: module.exports.getDOMNode(...) is deprecated. Please use ReactDOM.findDOMNode(instance) instead.
Warning: ReactDOMComponent: Do not access .getDOMNode() of a DOM node; instead, use the node directly. This DOM node was rendered by module.exports.

After some brain scratching (I'm a React noob), I found that changing line 137 from

DOMNode = this.getDOMNode() ? (this.refs[options.ref] || this).getDOMNode() : this.refs[options.ref] || this;

TO

DOMNode = this.refs[options.ref] || this;
``
Removes the warning. 
I'm writing this in case others run into the issue or if you would like to fix it. 

Hope this helps. 

[RubaXa]

https://github.com/RubaXa/Sortable/blob/dev/react-sortable-mixin.js#L143

[sungwoncho]

@desduvauchelle could you open a PR?

Edit

nvm. There is a pending PR: #612

[2999]

@RubaXa could you publish it to npm?

[RubaXa]

@jiangzhizi To do this, need to test the dev-branch, but I don't have time for this.