add style-loader

Author: egoist

package.json

@@ -44,6 +44,7 @@
     "html-webpack-plugin": "^2.22.0",
     "postcss-loader": "^0.9.1",
     "progress-bar-webpack-plugin": "^1.9.0",
+    "style-loader": "^0.13.1",
     "vue-loader": "^9.3.2",
     "webpack": "^2.1.0-beta.20",
     "webpack-dev-middleware": "^1.6.1",