expose memo ?

memo is missing in steem.min.js

src/browser.js

 const api = require("./api");
 const auth = require("./auth");
+const memo = require("./auth/memo");
 const broadcast = require("./broadcast");
 const config = require("./config");
 const formatter = require("./formatter")(api);
@@ -8,6 +9,7 @@ const utils = require("./utils");
 const steem = {
   api,
   auth,
+  memo,
   broadcast,
   config,
   formatter,