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

Closes #101

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "babel-cli": "^6.24.1",
     "babel-core": "^6.24.1",
     "babel-jest": "^22.0.0",
-    "babel-loader": "^7.0.0",
+    "babel-loader": "^8.1.0",
     "babel-preset-env": "^1.5.1",
     "babel-preset-es2015": "^6.22.0",
     "babel-preset-react": "^6.24.1",