added node modules back to the example bot, so it exports with the required modules

node_modules/compress-commons/lib/compress-commons.js

@@ -0,0 +1,13 @@
+/**
+ * node-compress-commons
+ *
+ * Copyright (c) 2014 Chris Talkington, contributors.
+ * Licensed under the MIT license.
+ * https://github.com/archiverjs/node-compress-commons/blob/master/LICENSE-MIT
+ */
+module.exports = {
+  ArchiveEntry: require('./archivers/archive-entry'),
+  ZipArchiveEntry: require('./archivers/zip/zip-archive-entry'),
+  ArchiveOutputStream: require('./archivers/archive-output-stream'),
+  ZipArchiveOutputStream: require('./archivers/zip/zip-archive-output-stream')
+};