The root directory contains the following subdirectories:
backend- backend web application.
common- files common to all applications.
console- console application.
environments- environment configs.
frontend- frontend web application.
Root directory contains a set of files.
.gitignorecontains a list of directories ignored by git version system. If you need something never get to your source code repository, add it there.
composer.json- Composer config described in Configuring Composer.
init- initialization script described in Configuration and environments.
init.bat- same for Windows.
LICENSE.md- license info. Put your project license there. Especially when opensourcing.
README.md- basic info about installing template. Consider replacing it with information about your project and its installation.
requirements.php- Yii requirements checker.
yii- console application bootstrap.
yii.bat- same for Windows.