package.json cleanup, to make "npm install" complain less.
Add the staccato.yml file that will get it running on https://cupcake-dashboard.paas.allizom.org/
(Well, almost running anyways.  First cuts at things are good, though, right? ;)
The main script is really server.js, not index.js.
Use the mongo settings from the paas, if they exist.
Get it deploying cleanly on paas.allizom.
Use the smaller, cleaner form of the connection information.
Don't omit the stuff we actually need to show the index file.  ;)
Update the readme with deployment instructions.
Merge pr/2
Remove uneeded private.yml file.