add copyright notice to raw-files.js

Gruntfile.js

@@ -396,5 +396,8 @@ module.exports = function (grunt) {
   // task for building customizer
   grunt.registerTask('build-customizer', ['build-customizer-vars-form', 'build-raw-files']);
   grunt.registerTask('build-customizer-vars-form', ['jade']);
-  grunt.registerTask('build-raw-files', 'Add scripts/less files to customizer.', generateRawFilesJs);
+  grunt.registerTask('build-raw-files', 'Add scripts/less files to customizer.', function () {
+    var banner = grunt.template.process('<%= banner %>');
+    generateRawFilesJs(banner);
+  });
 };

docs/grunt/bs-raw-files-generator.js

@@ -16,7 +16,10 @@ function getFiles(type) {
   return 'var __' + type + ' = ' + JSON.stringify(files) + '\n'
 }
 
-module.exports = function generateRawFilesJs() {
-  var files = getFiles('js') + getFiles('less') + getFiles('fonts')
+module.exports = function generateRawFilesJs(banner) {
+  if (!banner) {
+    banner = ''
+  }
+  var files = banner + getFiles('js') + getFiles('less') + getFiles('fonts')
   fs.writeFileSync('docs/assets/js/raw-files.js', files)
 }