Run PHPCS on pre-commit hook

Installation

1. Add following lines to composer.json:

   scripts: {
       "install-pre-commit-hook": ["bash ./vendor/urbanproof/phpcs-pre-commit/setup.sh"],
       "post-install-cmd": ["@install-pre-commit-hook"],
       "post-update-cmd": ["@install-pre-commit-hook"]
   },
   "repositories": [
       {
           "type": "vcs",
           "url": "https://github.com/Urbanproof/phpcs-pre-commit.git"
       }
   ]

2. Require; composer require --dev "urbanproof/phpcs-pre-commit"