MagentoHackathon\Composer\Magento\Plugin::onPackageUnistall PHP Method

    public function onPackageUnistall(\Composer\Installer\PackageEvent $event)
    {
        $ds = DIRECTORY_SEPARATOR;
        $package = $event->getOperation()->getPackage();
        list($vendor, $packageName) = explode('/', $package->getPrettyName());
        $packageName = trim(str_replace('module-', '', $packageName));
        $packageInstallationPath = $packageInstallationPath = $this->installer->getTargetDir();
        $packagePath = ucfirst($vendor) . $ds . str_replace(' ', '', ucwords(str_replace('-', ' ', $packageName)));
        $this->io->write("Removing {$packagePath}");
        $libPath = 'lib' . $ds . 'internal' . $ds . $packagePath;
        $magentoPackagePath = 'app' . $ds . 'code' . $ds . $packagePath;
        $deployStrategy = $this->installer->getDeployStrategy($package);
        $deployStrategy->rmdirRecursive($packageInstallationPath . $ds . $libPath);
        $deployStrategy->rmdirRecursive($packageInstallationPath . $ds . $magentoPackagePath);
        $this->requestRegeneration();
    }