Default port
App::status
Devices and Sensors merged as Endpoints, Promise IO
Refactor App for Promise IO and simplify API

Uses Promise-returning endpoints.
Remove dependency on lodash.
Add #endpointsWhere finder.
Fix bug whereby all blueprint Endpoints shared a driver
Remove support for multi-instruction app messages
Endpoint does not implement 'finally' for busy state cleanup
Refine App API
Server uses new App API
App#endpoint param is property object, not just ID
Refactor index.js convenience loader
0.1.0 release
Merge pull request #5 from andrewk/promises

Major rewrite to move from events + callbacks to Promises