Add nginx in front of node for first level cache and gzip compression

[bdickason]

This seems like the first step to reduce load on our server. There's a basic guide here for how to do this: http://blog.argteam.com/coding/hardening-node-js-for-production-part-2-using-nginx-to-avoid-node-js-load/

[bdickason]

Working on this now

[bdickason]

nginx is up and running on port 3002 of bdickason.com. Need to make a small modification to node to pass through proper cache headers

[bdickason]

Client side change to support this: https://github.com/ndejesus1227/t7-chicken-native/pull/50