Add "grunt/*.js" in the JSHint and JSCS checks.

Gruntfile.js

@@ -178,7 +178,7 @@ module.exports = function(grunt) {
         jshintrc: 'js/.jshintrc'
       },
       grunt: {
-        src: 'Gruntfile.js'
+        src: ['Gruntfile.js', 'grunt/*.js']
       },
       src: {
         src: 'js/*.js'

grunt/ratchicons-data-generator.js

@@ -4,6 +4,9 @@
  * Original script from Bootstrap (http://getbootstrap.com).
  * Bootstrap is copyright 2014 Twitter, Inc. and licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE).
  */
+
+/* jshint node: true */
+
 'use strict';
 var fs = require('fs');