Add API route to app.js

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);


// ...