update docshredder to shred .es6

Author: filipesilva

tools/doc-shredder/doc-shredder.js

@@ -120,7 +120,7 @@ function createShredExamplePackage(shredOptions) {
       readFilesProcessor.basePath = "/";
 
       // Specify collections of source files that should contain the documentation to extract
-      var extns = ['*.ts', '*.html', '*.js', '*.css', '*.json', '*.dart', '*.yaml' ];
+      var extns = ['*.ts', '*.html', '*.js', '*.css', '*.json', '*.dart', '*.yaml', '*.es6' ];
       var includeFiles = extns.map(function(extn) {
         if (options.includeSubdirs) {
           return path.join(options.examplesDir, '**', extn);

tools/doc-shredder/regionExtractor.js

@@ -154,6 +154,7 @@ function getCommentInfo(extension) {
   switch (extension) {
     case 'ts':
     case 'js':
+    case 'es6':
     case 'dart':
       commentInfo = {
         prefix: '//',