Remove CS dependencies and add zend-coding-standard to require-dev

Author: Koopzington

composer.json

@@ -30,7 +30,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^4.7",
-        "squizlabs/php_codesniffer": "^2.3"
+        "zendframework/zend-coding-standard": "~1.0.0"
     },
     "autoload": {
       "psr-4": {