Fix typos

Haven't tested this but noticed it while copying and pasting code, presume this change needs to be made. Thanks for posting this example by the way!

Author: tsongas

examples/auth-with-shared-root/components/PageTwo.js

@@ -1,9 +1,9 @@
 import React from 'react'
 
-const PageOne = React.createClass({
+const PageTwo = React.createClass({
   render() {
     return <h2>Page Two! Wooo!</h2>
   }
 })
 
-export default PageOne
+export default PageTwo