Merge pull request enzymejs#100 from noahhendrix/patch-1

[docs] `this.state` > `this.props` for `setProps` example

Author: ljharb

docs/api/ShallowWrapper/setProps.md

@@ -28,7 +28,7 @@ NOTE: can only be called on a wrapper instance that is also the root instance.
 class Foo extends React.Component {
   render() {
     return (
-      <div className={this.state.name}/>
+      <div className={this.props.name}/>
     );
   }
 }