fix: add create-wrapper

src/wrappers/create-wrapper.js

@@ -0,0 +1,15 @@
+// @flow
+
+import Vue from 'vue'
+import Wrapper from './wrapper'
+import VueWrapper from './vue-wrapper'
+
+export default function createWrapper (
+  node: VNode | Component,
+  update: Function,
+  options: WrapperOptions
+) {
+  return node instanceof Vue
+    ? new VueWrapper(node, options)
+    : new Wrapper(node, update, options)
+}