This commit provide a snapshot of pulling credentials from MongoDB. The following tools are needed:
Your own private server with node.js running. The server address goes into the Corona SDK client's main.lua line 9.
Node-login from Braitsch. Replace the account-manager.js module with the one here, but there isn't much difference except for a function I modified called getCredentials()
Noobhub, but replace the main node.js file with the one here.

Finally, you will need to run the Noobhub server
> node node
And also the node-login system
> cd node-login (wherever you cloned or placed the folder)
> node node-login

Now, when you run the Corona SDK client, it will attempt to pull the credentials of the username in main.lua's line 31 (username). Register an account yourself to test.

If successful, you should see the following output on the node.js server:
NoobHub on 0.0.0.0:1337
connected to database :: node-login
New client: 96.49.26.95:57195
Client subscribes for channel: hello-world
Client posts json:  {"action":"get_credentials","username":"kaitagsd"}

And the following in the client:
2014-01-26 16:02:03.533 Corona Simulator[16978:507] Get credentials success
2014-01-26 16:02:03.533 Corona Simulator[16978:507] username	kaitagsd
2014-01-26 16:02:03.533 Corona Simulator[16978:507] country	Canada
2014-01-26 16:02:03.534 Corona Simulator[16978:507] email	garytse89@gmail.com