Merge pull request #48 from nrk/fix-symfony-bundle

Fix missing support for the symfony-bundle package type.

bin/composer

@@ -27,6 +27,7 @@ $dm->setDownloader('zip',  new Downloader\ZipDownloader());
 // initialize installation manager
 $im = new Installer\InstallationManager();
 $im->setInstaller('library', new Installer\LibraryInstaller('vendor', $dm, $rm->getLocalRepository()));
+$im->setInstaller('symfony-bundle', new Installer\LibraryInstaller('vendor/bundles', $dm, $rm->getLocalRepository()));
 
 // load package
 $loader  = new Package\Loader\JsonLoader();