npm packages: express couchbase (requires libcouchbase [https://github.com/couchbase/libcouchbase]) mailgun-js (optional)
nodejs is expected to be proxied alongside an apache/nginx server with the '/a' location. For example, in nginx.conf within the server directive, add this:
location /a { proxy_pass http://localhost:9008; proxy_set_header X-Real-IP $remote_addr; }