fix(bins): update har-validator to promise version

lib/routes/bins/create.js

@@ -43,22 +43,21 @@ module.exports = function (req, res, next) {
 
   mock.content.size = 0
 
-  validate.response(mock, function (err, valid) {
-    if (!valid) {
-      res.body = {
-        errors: err.errors
-      }
-
-      return next()
-    }
+  validate.response(mock)
+    .then(function () {
+      var id = uuid.v4()
 
-    var id = uuid.v4()
+      this.client.set('bin:' + id, JSON.stringify(mock))
 
-    this.client.set('bin:' + id, JSON.stringify(mock))
+      res.view = 'redirect'
+      res.status(201).location(util.format('/bin/%s', id)).body = id
+    }.bind(this))
 
-    res.view = 'redirect'
-    res.status(201).location(util.format('/bin/%s', id)).body = id
+    .catch(function (err) {
+      res.body = {
+        errors: err.errors
+      }
+    })
 
-    next()
-  }.bind(this))
+    .then(next)
 }