#130: Prevent none zero exit code

- fixed readme

Author: lenaorobei

README.md

@@ -12,7 +12,7 @@ You can achieve this by adding the following to your project's `composer.json`:
 ````
 "scripts": {
     "post-install-cmd": [
-      "([ $COMPOSER_DEV_MODE -eq 1 ] && vendor/bin/phpcs --config-set installed_paths ../../magento/magento-coding-standard/) || true"
+      "([ $COMPOSER_DEV_MODE -eq 0 ] || vendor/bin/phpcs --config-set installed_paths ../../magento/magento-coding-standard/)"
     ],
     "post-update-cmd": [
       "([ $COMPOSER_DEV_MODE -eq 0 ] || vendor/bin/phpcs --config-set installed_paths ../../magento/magento-coding-standard/)"