running app.js on Mac

[cosmic espresso]

(opening and closing issue just for having it on record)

• After a LOT of fiddling around, I had to use this response: sandeepmistry/node-xpc-connection#24 (comment) to get xpc-connection to work. Not sure how stable it is tho...
• I also had to chmod 755 the web_app/node_modules folder.
• Lastly, noble = require('noble') worked for me, rather then var noble = require('../noble').