Run linter after the tests

Author: SpaceK33z

package.json

@@ -41,7 +41,7 @@
   ],
   "scripts": {
     "lint": "eslint *.js lib test",
-    "pretest": "npm run -s lint",
+    "posttest": "npm run -s lint",
     "test": "mocha --full-trace --check-leaks",
     "beautify": "npm run lint -- --fix",
     "cover": "istanbul cover node_modules/mocha/bin/_mocha",