timers being lost on shutdown due to a race condition in nats (#25)

* bug/Timers being lost on shutdown due to a race condition in nats

* Adjusted PR to prevent double callback and reverted change to creation

* Adjusted PR for double callback

* fixing some whitespace

lib/timer.js

@@ -201,16 +201,19 @@ timers.create(id, options, (err) => {
       debug('setting timer', id);
       //TODO(esatterwhite):
       // what should happen if leveldb fails.
-      if (err) console.error(err);
+      if (err) {
+        console.error(err);
+        return cb(err, null);
+      }
       this.nats.publish('skyring:events', JSON.stringify({
         type: EVENT_STATUS.CREATED
       , timer: id
       , node: this[kNode]
       , created: data.created
       , payload: payload
-      }), noop);
+       }), noop);
 
-      data.timer = setTimeout(
+       data.timer = setTimeout(
         transport
       , payload.timeout - elapsed
       , payload.callback.method
@@ -418,7 +421,7 @@ timers.failure('2e2f6dad-9678-4caf-bc41-8e62ca07d551', error)
   }
 
   disconnect(cb = noop) {
-    this[storage].close(noop)
+    this[storage].close(noop);
     this.transports[shutdown](() => {
       this.nats.publish('skyring:node', JSON.stringify({
         node: this[kNode]