composer.json / cakeStack Overflow

Я хочу использовать: https://github.com/mikealmond/MusicBrainz
Скопировал lib в папку myapp-> vendor. Установлен Guzzle с композитором и обновлен композитор.

use GuzzleHttp\Client;
use MusicBrainz\Filters\ArtistFilter;
use MusicBrainz\Filters\RecordingFilter;
use MusicBrainz\HttpAdapters\GuzzleHttpAdapter;
use MusicBrainz\MusicBrainz;

require __DIR__ . '/vendor/autoload.php';

Автозагрузка не работает. Я много чего перепробовал и не знаю, что написать в composer.json.

Error: Class 'MusicBrainz\MusicBrainz' not found

Когда я звоню:

$brainz = new MusicBrainz(new GuzzleHttpAdapter(new Client()));

Я пробовал в composer.json

"require-dev": {
"vendor/MusicBrainz": "dev-master"},
"repositories": [
{
"type": "vcs",
"url":  "https://github.com/mikealmond/MusicBrainz.git"}
],

Тогда обновление композитора …
И я получаю:

Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- The requested package src/musicbrainz could not be found in any version, there may be a typo in the package name.

Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your minimum-stability setting
see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.