Fix #31 - selected index on update

Author: vutran

src/Omnibar.tsx

@@ -43,6 +43,7 @@ export default class Omnibar<T> extends React.PureComponent<
               ? results.slice(0, this.props.maxResults)
               : results,
           displayResults: results.length > 0,
+          selectedIndex: Math.min(this.state.selectedIndex, results.length - 1),
         });
         this.props.onQuery && this.props.onQuery(results);
       });