Standards can be installed with Composer dependency manager:
$ composer require dekode/coding-standards --dev
When the package is installed via Composer you can check your files with the coding standards via:
$ vendor/bin/phpcs --standard="Dekode" <path>
Where <path> is at least one file or directory to check, ex ..
To not have to pass all the arguments to the command line, and also make your
own project customizations create a phpcs.xml.dist file that contains
something like this:
<?xml version="1.0"?>
<ruleset name="MyProjectCodingStandard">
<description>My Project coding standard.</description>
<file>.</file>
<!-- Only check .php files -->
<arg name="extensions" value="php" />
<!-- Set required text domain -->
<config name="text_domain" value="my-project" />
<!-- PHP 7.0 and higher. -->
<config name="testVersion" value="7.0-" />
<!-- Rules -->
<rule ref="Dekode" />
</ruleset>