clean up migrations

migrations/003-device-events.js

@@ -1,17 +1,15 @@
-'use strict';
+var db = require('./db')
 
-var db = require('./db');
-
-exports.up = function(next) {
-  db.query('CREATE TABLE IF NOT EXISTS machine_events ( ' +
+exports.up = function (next) {
+  db.multi(['CREATE TABLE IF NOT EXISTS machine_events ( ' +
     'id uuid PRIMARY KEY, ' +
     'device_fingerprint text NOT NULL, ' +
     'event_type text NOT NULL, ' +
     'note text, ' +
     'device_time bigint NOT NULL, ' +
-    'created timestamp NOT NULL DEFAULT now() )', next);
-};
+    'created timestamp NOT NULL DEFAULT now() )'], next)
+}
 
-exports.down = function(next) {
-  next();
-};
+exports.down = function (next) {
+  next()
+}