Update package.json

Author: anthonygore

package.json

@@ -27,7 +27,7 @@
     "babel-plugin-transform-es2015-destructuring": "^6.19.0",
     "babel-plugin-transform-object-rest-spread": "^6.20.2",
     "babel-plugin-transform-runtime": "^6.22.0",
-    "babel-preset-es2015": "^6.0.0",
+    "babel-preset-env": "^1.6.0",
     "cross-env": "^3.0.0",
     "css-loader": "^0.25.0",
     "file-loader": "^0.9.0",
@@ -37,7 +37,7 @@
     "open": "0.0.5",
     "sass-loader": "^4.1.1",
     "style-loader": "^0.13.1",
-    "uglify-js": "git://github.com/mishoo/UglifyJS2.git#harmony",
+    "uglify-js": "^3.0.28",
     "vue": "^2.1.0",
     "vue-loader": "^10.0.0",
     "vue-resource": "^1.0.3",