Merge pull request #2066 from gebilaoxiong/dev

在$watch方法中初始化Wather的时候，user选项是不是漏写了？

Author: yyx990803

src/directive.js

@@ -215,7 +215,8 @@ Directive.prototype._setupParamWatcher = function (key, expression) {
       called = true
     }
   }, {
-    immediate: true
+    immediate: true,
+    user: false
   })
   ;(this._paramUnwatchFns || (this._paramUnwatchFns = [])).push(unwatch)
 }

src/instance/api/data.js

@@ -83,7 +83,8 @@ export default function (Vue) {
     var watcher = new Watcher(vm, expOrFn, cb, {
       deep: options && options.deep,
       sync: options && options.sync,
-      filters: parsed && parsed.filters
+      filters: parsed && parsed.filters,
+      user: !options || options.user !== false
     })
     if (options && options.immediate) {
       cb.call(vm, watcher.value)