fixed the version of php_codesniffer to stay under 3.0 (#35)

Author: krukru

composer.json

@@ -50,6 +50,6 @@
 	},
 	"require": {
 		"php": ">=5.4.0",
-		"squizlabs/php_codesniffer": ">=2.3.1"
+		"squizlabs/php_codesniffer": ">=2.3.1 <3.0"
 	}
 }