Chaining app controller path wrong

[mytharcher]

When chaining multi express application together, the controller path calculation based on module.parent of node will be wrong.

app1.js

var express = require('express');
var rainbow = require('rainbow');

var app = express();
app.use('/', rainbow({controllers: 'app1/controllers'}));

module.exports = app;

app2.js

var rainbow = require('rainbow');
var app = require('app1');
app.use('/app2', rainbow({controllers: 'app2/controllers'}))

Then when start the app2, the twice rainbow scanning are always on the app2/controllers path. This made the controllers/routers in app1 which required by app2 cannot be initialized.

This issues mostly caused by the module.parant with node module cache.