Adding a notification stack for error messages

app/assets/javascripts/components/containers/notifications_container.jsx

@@ -0,0 +1,25 @@
+import { connect }             from 'react-redux';
+import { NotificationStack }   from 'react-notification';
+import { dismissNotification } from '../actions/notifications';
+
+const mapStateToProps = (state, props) => {
+  return {
+    notifications: state.get('notifications').map((item, i) => ({
+      message: item.get('message'),
+      title: item.get('title'),
+      key: i,
+      action: 'Dismiss',
+      dismissAfter: 5000
+    })).toJS()
+  };
+};
+
+const mapDispatchToProps = (dispatch) => {
+  return {
+    onDismiss: notifiction => {
+      dispatch(dismissNotification(notifiction));
+    }
+  };
+};
+
+export default connect(mapStateToProps, mapDispatchToProps)(NotificationStack);