<?php namespace Illuminate\Events;

use Illuminate\Support\ServiceProvider;

class EventServiceProvider extends ServiceProvider {

	/**
	 * Register the service provider.
	 *
	 * @return void
	 */
	public function register()
	{
		$this->app['events'] = $this->app->share(function($app)
		{
			return new Dispatcher($app);
		});
	}

}

<?php namespace Illuminate\Events;

use Illuminate\Support\ServiceProvider;

class EventServiceProvider extends ServiceProvider {

	/**
	 * Register the service provider.
	 *
	 * @return void
	 */
	public function register()
	{
		$this->app->singleton('events', function($app)
		{
			return new Dispatcher($app);
		});
	}

}

Use singleton method for binding shared instance.
Use singleton method for binding shared instance.