chore(package): update eslint to version 6.5.1

Closes #8

Author: greenkeeper[bot]

package.json

@@ -25,7 +25,7 @@
   },
   "devDependencies": {
     "babel-eslint": "^9.0.0",
-    "eslint": "^5.5.0",
+    "eslint": "^6.5.1",
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-jsx-a11y": "^6.1.1",
     "eslint-plugin-react": "^7.11.1"