watch "region" tuple from ibeacon-android, write "door-open" tuple.
- https://github.com/node-linda/ibeacon-door-open
- watch {"type": "region", "action": "enter"}
- write {"type": "door", "cmd": "open", who: USERNAME}
% npm install
% npm start
watch "region" tuple from ibeacon-android, write "door-open" tuple.
% npm install
% npm start