Children are required

src/components/views/elements/MemberEventListSummary.js

@@ -23,6 +23,8 @@ module.exports = React.createClass({
     propTypes: {
         // An array of member events to summarise
         events: React.PropTypes.array.isRequired,
+        // An array of EventTiles to render when expanded
+        children: React.PropTypes.array.isRequired,
         // The maximum number of names to show in either the join or leave summaries
         summaryLength: React.PropTypes.number,
         // The maximum number of avatars to display in the summary