`npm run build` should also build unminified JS

package.json

@@ -20,7 +20,8 @@
     "headless": "webpack --config webpack.headless.js",
     "nodeps": "webpack --config webpack.nodeps.js",
     "cdn": "ASSET_PATH=https://cdn.conversejs.org/dist/ npm run dev && ASSET_PATH=https://cdn.conversejs.org/dist/ npm run build",
-    "build": "webpack --config webpack.prod.js",
+    "prod": "webpack --config webpack.prod.js",
+    "build": "npm run dev && npm run prod",
     "dev": "webpack --config webpack.dev.js",
     "watch": "webpack --watch --config webpack.dev.js",
     "lerna": "lerna bootstrap --hoist --ignore-scripts",