Removing domNode optimization

Author: tbolis

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-sketch",
-  "version": "0.2.11",
+  "version": "0.2.12",
   "description": "Sketch Element for React based applications, backed-up by fabricjs as its core",
   "keywords": [
     "react",

src/SketchField.jsx

@@ -83,8 +83,6 @@ class SketchField extends Component {
     };
 
     componentDidMount() {
-        this._domNode = ReactDOM.findDOMNode(this);
-
         let {tool,
             undoSteps,
             defaultData,
@@ -257,7 +255,7 @@ class SketchField extends Component {
     _resize(e) {
         if (e) e.preventDefault();
         let canvas = this._fc;
-        let domNode = this._domNode;
+        let domNode = ReactDOM.findDOMNode(this);
         let {offsetWidth,clientHeight} = domNode;
         let prevWidth = canvas.getWidth();
         let prevHeight = canvas.getHeight();