chore(package): update eslint to version 5.0.1

Closes #336

Author: greenkeeper[bot]

package.json

@@ -91,7 +91,7 @@
     "builtin-modules": "^3.0.0",
     "chai": "^4.1.2",
     "couchdb-harness": "*",
-    "eslint": "4.18.2",
+    "eslint": "5.0.1",
     "find-requires": "^0.2.2",
     "fs-extra": "^7.0.0",
     "glob": "^7.1.1",