add package

package.json

@@ -28,6 +28,7 @@
     "postcss-loader": "^0.4.4",
     "raw-loader": "^0.5.1",
     "react": "^0.13.3",
+    "react-hot-loader": "^1.2.7",
     "run-sequence": "^1.1.0",
     "through2": "^2.0.0",
     "vinyl": "^0.5.0",