Rename "roles" to "units". Put units in their own folders.

lib/units/device/support/push.js

@@ -0,0 +1,19 @@
+var syrup = require('syrup')
+
+var zmq = require('zmq')
+
+var logger = require('../../../util/logger')
+
+module.exports = syrup.serial()
+  .define(function(options) {
+    var log = logger.createLogger('device:support:push')
+
+    // Output
+    var push = zmq.socket('push')
+    options.endpoints.push.forEach(function(endpoint) {
+      log.info('Sending output to %s', endpoint)
+      push.connect(endpoint)
+    })
+
+    return push
+  })