Bump eslint from 3.19.0 to 6.6.0 (#10)

Bump eslint from 3.19.0 to 6.6.0

Author: NickCraver

package.json

@@ -39,7 +39,7 @@
     "chai": "^3.5.0",
     "coveralls": "^2.11.11",
     "docker-ip": "^2.0.1",
-    "eslint": "^3.1.1",
+    "eslint": "^6.6.0",
     "express": "^4.13.4",
     "hapi": "^13.5.0",
     "istanbul": "^0.4.3",