Add API route to app.js
// Other Require statements ...
var index = require('./routes/index.route');
var users = require('./routes/users.route');
// Get the API route ...
var api = require('./routes/api.route')
// Other stuffs ...
//Use the Routes
app.use('/', index);
app.use('/users', users);
//Use the API routes for all routes matching /api
app.use('/api', api);
// ...