change es6 to commonjs

Author: tangjinzhou

index.js

@@ -1,17 +1,19 @@
-export default {
-  install: (Vue, options = {}) => {
+module.exports = {
+  install: function install(Vue) {
+    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+
     Vue.directive(options.name || 'ref', {
-      bind: function (el, binding, vnode) {
-        binding.value(vnode.componentInstance || el, vnode.key)
+      bind: function bind(el, binding, vnode) {
+        binding.value(vnode.componentInstance || el, vnode.key);
       },
-      update: function (el, binding, vnode) {
-        binding.value(vnode.componentInstance || el, vnode.key)
+      update: function update(el, binding, vnode) {
+        binding.value(vnode.componentInstance || el, vnode.key);
       },
-      unbind: function (el, binding, vnode) {
-        if(!el.parentNode && !el.parentElement) {
-          binding.value(null, vnode.key)
+      unbind: function unbind(el, binding, vnode) {
+        if (!el.parentNode && !el.parentElement) {
+          binding.value(null, vnode.key);
         }
-      },
-    })
-  },
-}
+      }
+    });
+  }
+};

package.json

@@ -1,6 +1,6 @@
 {
     "name": "vue-ref",
-    "version": "1.0.1",
+    "version": "1.0.2",
     "title": "Vue Ref",
     "description": "use the callback to get a reference like react",
     "keywords": [
@@ -36,4 +36,4 @@
             "parser": "babel-eslint"
         }
     }
-}
+}