chore(package): update babel-loader to version 8.1.0

Closes #22

Author: greenkeeper[bot]

package.json

@@ -48,7 +48,7 @@
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.3",
     "babel-eslint": "^8.2.6",
-    "babel-loader": "^7.1.5",
+    "babel-loader": "^8.1.0",
     "babel-preset-react-app": "^3.1.2",
     "babel-runtime": "^6.26.0",
     "cross-env": "^5.2.0",