@seanmonstar, this causes a problem when testing manually:

```
example_primary (44079): TypeError: Cannot set property 'user' of undefined
example_primary (44079):     at exampleServer.post.user (/Users/stomlinson/development/browserid/scripts/serve_example_primary.js:63:20)
example_primary (44079):     at callbacks (/Users/stomlinson/development/browserid/node_modules/express/lib/router/index.js:272:11)
example_primary (44079):     at param (/Users/stomlinson/development/browserid/node_modules/express/lib/router/index.js:246:11)
example_primary (44079):     at pass (/Users/stomlinson/development/browserid/node_modules/express/lib/router/index.js:253:5)
example_primary (44079):     at Router._dispatch (/Users/stomlinson/development/browserid/node_modules/express/lib/router/index.js:280:5)
example_primary (44079):     at Object.Router.middleware [as handle] (/Users/stomlinson/development/browserid/node_modules/express/lib/router/index.js:45:10)
example_primary (44079):     at next (/Users/stomlinson/development/browserid/node_modules/connect/lib/http.js:201:15)
example_primary (44079):     at Object.exampleServer.get.req.session.user [as handle] (/Users/stomlinson/development/browserid/scripts/serve_example_primary.js:54:3)
example_primary (44079):     at next (/Users/stomlinson/development/browserid/node_modules/connect/lib/http.js:201:15)
example_primary (44079):     at Object.bodyParser [as handle] (/Users/stomlinson/development/browserid/node_modules/connect/lib/middleware/bodyParser.js:59:61)
```

It looks like session is not yet set, so we have to do this the original way.

When I revert this change, I then receive an error in provisioning the provisioning iframe when /api/whoami is called, the response is `null`