update package.json of demo (#329)

update package.json of demo

Author: winddies

test/demo2/package.json

@@ -15,6 +15,7 @@
     "babel-polyfill": "^6.26.0",
     "babel-preset-env": "^1.6.0",
     "babel-runtime": "^6.26.0",
+    "qiniu-js":"^2.0.2",
     "es3ify-loader": "^0.2.0",
     "open-browser-webpack-plugin": "0.0.5",
     "uglifyjs-webpack-plugin": "^1.1.6",