Improve composer requirements
Improve composer requirements

yedey/SonataDoctrineMongoDBAdminBundle,zajca/SonataDoctrineMongoDBAdminBundle,zajca/SonataDoctrineMongoDBAdminBundle,zajca/SonataDoctrineMongoDBAdminBundle,yedey/SonataDoctrineMongoDBAdminBundle,yedey/SonataDoctrineMongoDBAdminBundle,zajca/SonataDoctrineMongoDBAdminBundle