[fixed] Fix propType warning in ButtonInputExample

Jimmy Jia · Jimmy Jia · commit ecb08616d3b9 · 2015-05-15T12:30:43.000-04:00
diff --git a/docs/examples/ButtonInput.js b/docs/examples/ButtonInput.js
@@ -2,14 +2,14 @@ const ButtonInputExample = React.createClass({
   getInitialState() {
     return {
       disabled: true,
-      style: ''
+      style: null
     };
   },
 
   resetValidation() {
     this.setState({
       disabled: true,
-      style: ''
+      style: null
     });
   },
 
