Add explicit loader-utils dependency to fix error:

./src/index.tsx
Module build failed: TypeError: loaderUtils.getOptions is not a function

Author: mattleff

packages/react-scripts/package.json

@@ -35,6 +35,7 @@
     "fs-extra": "3.0.1",
     "html-webpack-plugin": "2.28.0",
     "jest": "20.0.3",
+    "loader-utils": ">=1.0.0",
     "object-assign": "4.1.1",
     "postcss-flexbugs-fixes": "3.0.0",
     "postcss-loader": "2.0.5",