fix(build): use babel version compatible with webpack@1.14 (#2693)

fixes #2685

package.json

@@ -27,15 +27,15 @@
     "build": "gulp",
     "watch": "gulp watch",
     "watch-dev": "gulp watch --bundle"
-  },
+  }, 
   "dependencies": {
-    "babel-core": "^6.22.1",
-    "babel-loader": "^6.2.10",
+    "babel-core": "^6.6.5",
+    "babel-loader": "^6.2.4",
     "babel-polyfill": "^6.22.0",
     "babel-plugin-transform-es3-member-expression-literals": "^6.22.0",
-    "babel-plugin-transform-es3-property-literals": "^6.22.0",
+    "babel-plugin-transform-es3-property-literals": "^6.8.0",
     "babel-plugin-transform-runtime": "^6.22.0",
-    "babel-preset-es2015": "^6.22.0",
+    "babel-preset-es2015": "^6.6.0",
     "babel-runtime": "^6.22.0",
     "emitter-component": "^1.1.1",
     "moment": "^2.17.1",