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

node_modules/bcrypt/promises.js

@@ -0,0 +1,42 @@
+'use strict';
+
+var Promise = global.Promise;
+
+/// encapsulate a method with a node-style callback in a Promise
+/// @param {object} 'this' of the encapsulated function
+/// @param {function} function to be encapsulated
+/// @param {Array-like} args to be passed to the called function
+/// @return {Promise} a Promise encapsulating the function
+module.exports.promise = function (fn, context, args) {
+
+    if (!Array.isArray(args)) {
+        args = Array.prototype.slice.call(args);
+    }
+
+    if (typeof fn !== 'function') {
+        return Promise.reject(new Error('fn must be a function'));
+    }
+
+    return new Promise(function(resolve, reject) {
+        args.push(function(err, data) {
+            if (err) {
+                reject(err);
+            } else {
+                resolve(data);
+            }
+        });
+
+        fn.apply(context, args);
+    });
+};
+
+/// @param {err} the error to be thrown
+module.exports.reject = function (err) {
+    return Promise.reject(err);
+};
+
+/// changes the promise implementation that bcrypt uses
+/// @param {Promise} the implementation to use
+module.exports.use = function(promise) {
+  Promise = promise;
+};