add initial findings

c2015/login/protectedHandler.js

@@ -0,0 +1,28 @@
+var email, sessionKey, sessionVal;
+function onSignIn(googleUser){
+  var profile = googleUser.getBasicProfile();
+  email = profile.email;
+  //
+  sessionKey = email;
+  sessionVal = localStorage.getItem(sessionKey);
+}
+
+function doAuthCheck(){
+  if (sessionVal != "in") {
+      alert("authError!");
+  } else {alert("auth successful")}
+}
+
+$(window).load(function ()
+{
+    var i = setInterval(function ()
+    {
+        if ($('#foo').length)
+        {
+            clearInterval(i);
+            // safe to execute your code here
+            doAuthCheck();
+            
+        }
+    }, 2000);
+});