chore(package): update babel-preset-airbnb to version 4.4.0

Closes #58

Author: greenkeeper[bot]

package.json

@@ -52,7 +52,7 @@
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",
-    "babel-preset-airbnb": "^2.5.3",
+    "babel-preset-airbnb": "^4.4.0",
     "chai": "^4.1.2",
     "enzyme": "^3.4.1",
     "enzyme-adapter-react-helper": "^1.3.0",