embedded browser: default value for callbackURL

app.js

@@ -209,7 +209,7 @@ var overrideIfAuthenticated = function (req, res, next) {
     res.locals.account.tenant = client.tenant;
     res.locals.account.clientId = client.clientID;
     res.locals.account.clientSecret = client.clientSecret;
-    res.locals.account.callback = client.callback || 'http://YOUR_APP/callback';
+    res.locals.account.callback = client.callback;
     next();
   });
 };
@@ -238,7 +238,7 @@ var overrideIfClientInQsForPublicAllowedUrls = function (req, res, next) {
     res.locals.account.tenant       = client.tenant;
     res.locals.account.clientId     = client.clientID;
     res.locals.account.clientSecret = client.clientSecret;
-    res.locals.account.callback     = client.callback || 'http://YOUR_APP/callback';
+    res.locals.account.callback     = client.callback;
     res.locals.connectionName       = req.query.conn;
 
     next();
@@ -264,7 +264,7 @@ var overrideIfClientInQs = function (req, res, next) {
     res.locals.account.tenant       = client.tenant;
     res.locals.account.clientId     = client.clientID;
     res.locals.account.clientSecret = client.clientSecret;
-    res.locals.account.callback     = client.callback || 'http://YOUR_APP/callback';
+    res.locals.account.callback     = client.callback;
     res.locals.connectionName       = req.query.conn;
 
     next();

lib/sdk2/demos/embedded.jade

@@ -9,7 +9,7 @@ html
         var widget = new Auth0Widget({
           domain:       '!{namespace}',
           clientID:     '!{clientID}',
-          callbackURL:  '!{callback}',
+          callbackURL:  '!{callback || 'http://YOUR_APP/callback'}',
           assetsUrl:    '!{auth0_sdk_assets}',
           callbackOnLocationHash: !{callbackOnHash}
         });

lib/sdk2/demos/login.jade

@@ -7,7 +7,7 @@ html
       var widget = new Auth0Widget({
         domain:       '!{namespace}',
         clientID:     '!{clientID}',
-        callbackURL:  '!{callback}',
+        callbackURL:  '!{callback || 'http://YOUR_APP/callback'}',
         assetsUrl:    '!{auth0_sdk_assets}',
         callbackOnLocationHash: !{callbackOnHash}
       });