scss integration

package.json

@@ -27,6 +27,8 @@
     "fs-extra": "3.0.1",
     "html-webpack-plugin": "2.29.0",
     "jest": "20.0.4",
+    "node-sass-chokidar": "0.0.3",
+    "npm-run-all": "^4.0.2",
     "object-assign": "4.1.1",
     "postcss-flexbugs-fixes": "3.0.0",
     "postcss-loader": "2.0.6",
@@ -54,8 +56,11 @@
     "whatwg-fetch": "2.0.3"
   },
   "scripts": {
-    "start": "node scripts/start.js",
-    "build": "node scripts/build.js",
+    "build-css": "node-sass-chokidar src/ -o src/",
+    "watch-css": "npm run build-css && node-sass-chokidar src/ -o src/ --watch --recursive",
+    "start-js": "react-scripts start",
+    "start": "npm-run-all -p watch-css start-js",
+    "build": "npm run build-css && react-scripts build",
     "test": "node scripts/test.js --env=jsdom"
   },
   "devDependencies": {