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

lib/units/device/support/router.js

@@ -0,0 +1,19 @@
+var syrup = require('syrup')
+
+var wirerouter = require('../../../wire/router')
+
+module.exports = syrup.serial()
+  .dependency(require('./sub'))
+  .dependency(require('./channels'))
+  .define(function(options, sub, channels) {
+    var router = wirerouter()
+
+    sub.on('message', router.handler())
+
+    // Special case, we're hooking into a message that's not actually routed.
+    router.on({$code: 'message'}, function(channel) {
+      channels.keepalive(channel)
+    })
+
+    return router
+  })