Fail lint when eslint fails

package.json

@@ -14,7 +14,7 @@
     "dev:search": "better-npm-run dev:search",
     "eslint": "eslint .",
     "stylelint": "stylelint --syntax scss **/*.scss",
-    "lint": "npm run eslint; npm run stylelint",
+    "lint": "npm run eslint && npm run stylelint",
     "servertest": "npm run build && better-npm-run servertest",
     "start": "npm run version-check && NODE_PATH='./:./src' node bin/server.js",
     "start:disco": "NODE_APP_INSTANCE=disco npm start",