add .babelrc

Author: Leopoldthecoder

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015", "stage-2"]
+}

package.json

@@ -13,11 +13,6 @@
     "type": "git",
     "url": "https://github.com/ElemeFE/vue-msgbox.git"
   },
-  "babel": {
-    "presets": [
-      "es2015"
-    ]
-  },
   "keywords": [
     "message box",
     "alert",
@@ -32,6 +27,7 @@
     "babel-loader": "^6.2.0",
     "babel-plugin-transform-runtime": "^6.3.13",
     "babel-preset-es2015": "^6.3.13",
+    "babel-preset-stage-2": "^6.5.0",
     "css-loader": "^0.23.1",
     "eslint": "^1.10.3",
     "eslint-loader": "^1.1.1",