Allow js files that are not linted (#335)

Not something we would want to use generally, but maybe we can allow an
exception here.

Author: recrwplay

package.json

@@ -74,7 +74,7 @@
     "start": "LIVERELOAD=true gulp preview",
     "lint": "npm run lint:css && npm run lint:js",
     "lint:css": "stylelint \"src/css/**/*.css\"",
-    "lint:js": "eslint gulpfile.js \"gulp.d/**/*.js\" \"src/{helpers,js}/**/*.js\"",
+    "lint:js": "eslint gulpfile.js \"gulp.d/**/*.js\" \"src/{helpers,js}/**/*.js\" --ignore-pattern \"src/js/no-lint/**/*.js\"",
     "build": "gulp bundle"
   },
   "dependencies": {

src/js/31-scarf-pixel.js renamed to src/js/no-lint/31-scarf-pixel.js

@@ -19,7 +19,7 @@ import './24-graphacademy-certification'
 import './23-yelp-agreement'
 import './25-graphgist'
 // import './30-personalisation'
-import './31-scarf-pixel'
+import './no-lint/31-scarf-pixel'
 import './40-challenges'
 import './50-cheat-sheet-toggle'
 import './60-docs-roles'