CMB2 as Composer Library

{
"require": {
"php": ">=5.3.0",
"composer/installers": "v1.0.12",
"webdevstudios/cmb2": "dev-master",
},
"autoload": {
"files": ["vendor/cmb2/init.php"]
},
"extra": {
"installer-paths": {
"vendor/{$name}/": ["webdevstudios/cmb2"]
}
}
}
composer.json