Merge pull request #46 from WideChat/master-catchup-80cfd04

[Upstream Catchup] Merge RC:master to master

Author: Shailesh351

client/AppsEngineUIClient.js

@@ -36,7 +36,7 @@ export declare abstract class App implements IApp {
      * @return {string} the username of the app user
      *
      * @deprecated This method will be removed in the next major version.
-     * Please use read.getAppUser instead.
+     * Please use read.getUserReader().getAppUser() instead.
      */
     getAppUserUsername(): string;
     /**