fix(top-app-bar): allow react elements in title (#376)

Matt Goo · web-flow · commit f6da36135b7b · 2018-11-05T10:58:10.000-08:00
diff --git a/packages/top-app-bar/index.js b/packages/top-app-bar/index.js
@@ -228,7 +228,9 @@ TopAppBar.propTypes = {
   short: PropTypes.bool,
   shortCollapsed: PropTypes.bool,
   style: PropTypes.object,
-  title: PropTypes.string,
+  title: PropTypes.oneOfType([
+    PropTypes.string, PropTypes.element,
+  ]),
 };
 
 TopAppBar.defaultProps = {
