use React.Component for divider

Author: picodoth

src/Divider.jsx

@@ -1,24 +1,20 @@
 import React from 'react';
 import PropTypes from 'prop-types';
-import createReactClass from 'create-react-class';
-
-const Divider = createReactClass({
-  displayName: 'Divider',
-
-  propTypes: {
-    className: PropTypes.string,
-    rootPrefixCls: PropTypes.string,
-  },
-
-  getDefaultProps() {
-    // To fix keyboard UX.
-    return { disabled: true };
-  },
 
+class Divider extends React.Component {
   render() {
     const { className = '', rootPrefixCls } = this.props;
     return <li className={`${className} ${rootPrefixCls}-item-divider`}/>;
-  },
-});
+  }
+}
+
+Divider.propTypes = {
+  className: PropTypes.string,
+  rootPrefixCls: PropTypes.string,
+};
+
+Divider.defaultProps = {
+  disabled: true,
+};
 
 export default Divider;