chore(package): update eslint to version 5.15.3

Closes #7

Author: greenkeeper[bot]

package.json

@@ -62,7 +62,7 @@
     "babel-plugin-transform-react-remove-prop-types": "^0.4.20",
     "enzyme": "^3.3.0",
     "enzyme-adapter-react-16": "^1.1.1",
-    "eslint": "^4.2.0",
+    "eslint": "^5.15.3",
     "eslint-config-airbnb": "16.1.0",
     "eslint-plugin-import": "^2.7.0",
     "eslint-plugin-jsx-a11y": "6.0.3",