How to install an extension from a Git repository

[dmitrii_fediuk]

You can install Magento 2.0 extension (external module) from a Git repository with 4 steps:

Step 1

Register your Git repository for Composer:

composer config repositories.df/blog vcs http://code.dmitry-fedyuk.com/m2/blog.git

If your Git repository is private (as in my case) you can specify auth credetials in composer auth.json.
For example:

{
	"http-basic": {
		"code.dmitry-fedyuk.com": {
			"username": "<your user name>",
			"password": "<your password>"
		}
	}
}

Step 2

Require your extension through Composer:

composer require df/blog:dev-master

An example of composer.json for Magento 2.0 extension:

{
	"name": "df/blog"
	,"description": "Magento 2.0 blog extension"
	,"type": "magento2-module"
	,"require": {
		"php": ">=5.5.0"
		,"magento/framework": ">=0.74.0-beta16"
		,"magento/magento-composer-installer": "*"
	},
	"extra": {"map": [["*", "Df/Blog"]]}
}

The type must be magento2-module.

Step 3.

Run the Magento upgrade script:

bin/magento setup:upgrade

Note that the module will be added to app/etc/config.php automatically:

'Df_Blog' => 1

Step 4

Remove the cache.