create comment history class

client/coral-plugin-comment-history/CommentHistory.js

@@ -0,0 +1,20 @@
+import React from 'react';
+import {connect} from 'react-redux';
+
+const mapStateToProps = state => {
+  return {
+    config: state.config.toJS(),
+    items: state.items.toJS(),
+    auth: state.auth.toJS()
+  };
+};
+
+class CommentHistory extends React.Component {
+  render () {
+    return (
+      <div>Comment History</div>
+    );
+  }
+}
+
+export default connect(mapStateToProps)(CommentHistory);