Editing express generated app.js to serve static files generated by grunt

edit_express_app.js

// view engine setup - erased
// app.set('views', path.join(__dirname, 'views'));
// app.set('view engine', 'jade');

app.use(favicon(path.join(__dirname,'dist','favicon.ico')));

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(cookieParser());
// app.use(express.static(path.join(__dirname, 'public')));  - erased

//  - erased route setup - made by FE
// app.use('/', routes);
// app.use('/users', users);

/// catch 404 and forward to error handler
// app.use(function(req, res, next) {
//     var err = new Error('Not Found');
//     err.status = 404;
//     next(err);
// });

/// error handlers

// development error handler  - erased
// will print stacktrace
// if (app.get('env') === 'development') {
//     app.use(function(err, req, res, next) {
//         res.status(err.status || 500);
//         res.render('error', {
//             message: err.message,
//             error: err
//         });
//     });
// }

/**
 * New Development Settings - for AngularJS app
 */
if (app.get('env') === 'development') {
    // on dev environment we'l use the /client folder instead of the /server
    app.use(express.static(path.join(__dirname, '../client')));
    // Serving up the index page
    app.use(express.static(path.join(__dirname, '../client/.tmp')));
    app.use(express.static(path.join(__dirname, '../client/app')));

    // Error Handling
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

/**
 * Production Settings
 */
if (app.get('env') === 'production') {

    // On production we'll use the build version located on the /server/dist folder
    app.use(express.static(path.join(__dirname, '/dist')));

    // production error handler
    // no stacktraces leaked to user
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: {}
        });
    });
}