pass grunt into generateRawFilesJs instead of require()ing it

Gruntfile.js

@@ -460,7 +460,7 @@ module.exports = function (grunt) {
   grunt.registerTask('build-customizer-html', 'jade');
   grunt.registerTask('build-raw-files', 'Add scripts/less files to customizer.', function () {
     var banner = grunt.template.process('<%= banner %>');
-    generateRawFiles(banner);
+    generateRawFiles(grunt, banner);
   });
 
   // Task for updating the npm packages used by the Travis build.

grunt/bs-raw-files-generator.js

@@ -10,7 +10,6 @@
 'use strict';
 var fs = require('fs');
 var btoa = require('btoa');
-var grunt = require('grunt');
 
 function getFiles(type) {
   var files = {};
@@ -25,7 +24,7 @@ function getFiles(type) {
   return 'var __' + type + ' = ' + JSON.stringify(files) + '\n';
 }
 
-module.exports = function generateRawFilesJs(banner) {
+module.exports = function generateRawFilesJs(grunt, banner) {
   if (!banner) {
     banner = '';
   }