Accessing package controllers in Laravel 4

I have created a package following the "Creating a Package" instructions in the Laravel 4 documentation. After creating the package I have created a "controllers" folder and a routes file. The new file structure is:

/src
    /Vendor
        /Package
            PackageServiceProvider.php
    /config
    /controllers
    /lang
    /migrations
    /views
    routes.php
/tests
/public

I added the routes file to the boot portion of the package service provider:

public function boot()
{
    $this->package('vendor/package');
    include __DIR__ . '/../../routes.php';
}

Then added a basic route to the routes file:

Route::get('/package', function() {
    return "Package route test";
});

Visiting my application at the specified route (app.dev/package) returns the expected:

Package route test

Then adding a basic controller call to the route (using the default Laravel controller, "HomeController") works:

Route::get('/package', 'HomeController@showWelcome');

I then followed this SO answer for setting up the controller for the package. I added the src/controllers folder to the composer classmap, then I dumped the autoloader and checked vendor/composer/autoload_classmap.php and found the class is successfully loaded by composer:

<?php

// autoload_classmap.php generated by Composer

$vendorDir = dirname(__DIR__);
$baseDir = dirname($vendorDir);

return array(
    'HomeController' => $baseDir . '/src/controllers/HomeController.php',
);

Now I added the new package controller to the route using the namespace:

Route::get('/package', 'Vendor\Package\Controllers\HomeController@showWelcome');